Question about Lenovo ThinkPad R60 with Wireless Wide Area Network (ThinkPad R60_WWAN_Standard_123N)

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Geometry- the length of the squre is added by 5cm. to form a new square.the area of the new square is 2.25 times the area of the original square.find the area of each square.show your solution.

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This is a math problem?

the area of the old square was 100, the new one is 225

say the old squares side was X, so the area was X^2

the new square has area 2.25 X^2

take the square root to find the side of the new square: 1.5 X

so we know that the side of the old square plus 5cm is the side of the new square. so X + 5 = 1.5 X
solve that to find X = 10,

so the area of the old square was X ^ 2 = 100
and the area of the new square is 2.25 X ^ 2 = 225 :)


Posted on Aug 10, 2008

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Find out why and how to work wirelessly, and a few safety precautions


Working wirelessly: What you need to know

Many companies are making the leap to wireless networks in the office for both financial savings in overall equipment and sheer convenience for their employees. They also often provide mobile PCs with wireless capabilities to their employees so that they can be productive anytime anywhere, hence enhancing the company's bottom-line.

In this article, I will explain what WiFi is and how it works. I will also discuss what you need to start working wirelessly as well as what you can expect to gain from doing so. Finally, I'll discuss the precautions you should take when working on the go.
What is WiFi? Learn the lingo

Wireless, or WiFi, technology is another way of connecting your computer to the network using radio frequency and no network cables.

Wireless works similarly to cordless phones; they transmit data from one point to another through radio signals. But wireless technology also requires that you be within the wireless network range area to be able to connect your computer. There are three different types of wireless networks:

* Wireless Local Area Network (WLAN): WLAN are wireless networks that use radio waves. The backbone network usually uses cables, with one or more wireless access points connecting the wireless users to the wired network. The range of a WLAN can be anywhere from a single room to an entire campus.

* Wireless Personal Area Network (WPAN): WPANs are short-range networks that use Bluetooth technology. They are commonly used to interconnect compatible devices near a central location, such as a desk. A WPAN has a typical range of about 30 feet.

* Wireless Wide Area Networks (WWAN): WWANs are created through the use of mobile phone signals typically provided and maintained by specific mobile phone (cellular) service providers. WWANs can provide a way to stay connected even when away from other forms of network access. Also, be aware that additional charges are often associated with the usage of WWANs in some locations.

How do I get started?

The only thing you really need to go wireless (in addition to a mobile PC) is a wireless PC Card. Depending on the age of your mobile PC, the card is either built-in or needs to be inserted in the PC Card slot and includes an antenna. In addition, you can also use wireless keyboards and mice, which can provide more freedom and flexibility when you're working in your office.

It's always good to research the available hotspots in the area you're planning on visiting (whether a neighborhood in your city you're not familiar with or a city on the other coast). You can use Bing to find hotspots when you travel.

As you head out in this brave new world of wirelessly connectivity, you can connect to a wireless network (whether at home, at work, or on the go).

Connect to a wireless network

* Windows 7
* Windows Vista
* Windows XP

Working wirelessly: What's in it for me

Working wirelessly can offer you the following benefits.

* Flexibility: The lack of cables that comes with wireless networking enables you to roam with your mobile PC. You can roam from your office to a nearby conference room for a meeting, or from the couch in the living room to a kitchen for a snack. For example, if you're working wirelessly in a meeting you can printout a report for a co-worker without having to leave the meeting.

* Time-saving: If you're waiting for an important response you can use your mobile PC to monitor your e-mail even when you're in meetings or at lunch. As soon as you get the data needed, you can promptly forward it to your customer rather than wondering whether the information has come in while you were away and having to run back to your office between meetings and other commitments.

* Increased productivity: Working wirelessly enables you to turn down times between meetings or while in transit into productive time. For example, you may be attending a conference and just found out that one of the sessions you were planning on attending has been cancelled. Rather than waste the next hour, you can check e-mail, start compiling your trip report, or order your son's birthday present.

* Easier collaboration: Using wireless mobile PCs, you can easily share files and information with others. For example, you can collaborate on a presentation with colleagues during a flight delay in an airport lounge, or you can share the syllabus of a course while attendees so that they can take more digitally during the class.

What should I worry about when working wirelessly?

When working wirelessly from hotspots and public places, you are responsible for ensuring the security of your files and your mobile PC.

To make network access easier for their users, public hotspots typically leave all security turned off. This means that any information you send from a hotspot is most likely unencrypted, and anyone within range of the wireless LAN, whether at a next table or in the parking lot, can access and use your Internet connection, and look at your unprotected information.

WiFi gives you the freedom to go anywhere and still be connected to your office, your family, and other important aspects of your life. Your virtual office can now be an ice cream parlor in a seaside resort. Embrace and enjoy the flexibility that WiFi affords you.

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you try form USB or LAN interface \\Ethernet connection (recommended)


  1. Plug one end of the RJ-11 telephone cable into an unfiltered telephone wall jack (enabled for Sympatico High Speed Internet service).
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USB connection

  1. Plug one end of the RJ-11 telephone cable into an unfiltered telephone wall jack (enabled for Sympatico High Speed Internet service).
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How to Check Available Hard Drive Space
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First, I appreciate the details provided by you. It could be better if you could let me know the make/ model of Access Point. Below are typical ways to address the issues highlighted by you:
1. YOU CAN RESET THE ROUTER TO FACTORY SETTINGS
You may reset router to factory setting from the reset button on the back side of the router. Press the button for few seconds, the lights on the front would blink and the router would restart with factory setting. Please note that ALL SETTING WOULD BE LOST...AND YOU WOULD HAVE TO MAKE CONFIGURATIONS AND SETTING ALL OVER AGAIN. Also, checkout the reset
procedure for your specific access point model.

2. Most routers have about 200m range. However, the actual range in real-time environment is much less. Generally the antenas are omni-directional, however, directional antenna can be used to improve range in one direction.There are two ways to increase the range/ coverage area (i) Adding external antenna of appropriate type (ii) Installing additional Access Point (AP) connecting it with the existing AP wirelessly in line-of-sight (creating WDS) OR connecting the two APs with wire, which is a better option as it provides robust and reliable connectivity between APs.

3. Based on my on-site experience, I suggest that you may relocate the AP to another location depending upon your network environment. It has always helped me a great deal. Placing the AP at the desk level, avoiding obstacles such as concrete pillars, walls, steel cabinets etc in the signal path have remarkable effect on range and overall performance of the network.

HOPE IT HELPS...Let me know if you need any further clarification assistance specific to you AP make and model. Don't forget to rate the solution if I could have been of any help!
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I think I was having a similar problem with my DAP-1522 ... FW Version 1.10 being used as an access point. I recently discovered that I was not able to connect to the configuration pages using a web browser by typing in it's IP address (192.168.0.50). When I originally set this up device up on my network, it worked just fine, but at some point in time, it stopped working. My solution to this problem was to set the switch on the back of the 1522 from Auto to AP, then re-boot the DAP-1522 by removing power, waiting 10 seconds, then plugging power back in. Once the AP re-booted, I was then able to access the configuration login page by typing 192.168.0.50 into my browser. My DAP-1522 access point is connected via port 1 to my D-link router, a DGL-4100, via a DGS-2208, 8 port gigabit switch. Hope this helps!

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I'm afraid you need to clarify:
If you refer to (old) Specification 802.11 — it applies to wireless LANs and provides 1 or 2 Mbps transmission in the 2.4 GHz band using either frequency hopping spread spectrum (FHSS) or direct sequence spread spectrum (DSSS). you can compare with 802.11b (also referred to as 802.11 High Rate or Wi-Fi) — an extension to 802.11 that applies to wireless LANS and provides 11 Mbps transmission (with a fallback to 5.5, 2 and 1-Mbps) in the 2.4 GHz band. 802.11b uses only DSSS. 802.11b was a 1999 ratification to the original 802.11 standard, allowing wireless functionality comparable to Ethernet.
But as suggested by ricerz from Wikipedia:
IEEE 802.11 is a set of standards implementing by apple wireless local area network (WLAN) computer communication in the 2.4, 3.6 and 5 GHz spectrum bands. They are maintained by the IEEE LAN/MAN Standards Committee (IEEE 802).
You cannot compare 802.11 with 802-11b: 802-11b is an implementation of part of the 802.11 standard.
You can compare: 11a (using 5Gh band) with 11b (using 2.4 Gh band)
You can compare 11 b with 11g or 11n standard. and select according to environment.
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New accessories: Boosters, external antenna, WDS protocol to bridge WLan router, and new long range Wi-Fi are continuously changing performance, results and configuration

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Hi, a couple of ideas: 1. maybe out of range or too many obstruction, how far is the client from the AP or are there any objects in between. it's gotta be line of sight; 2. with 200mW power output and 5dBi external antenna, should be adequate, if not maybe slightly directional performance (no longer perfect omni). try rotating the device and more or less guesstimate max signal at a particular orientation (pointed towards the client). Netstumbler would be good enough for signal strength; 3. consider the optional integrated 9dBi patch antenna; 4. for the client having a hard time with the AP, manually enter the TCP/IP settings and not auto obtain. numbers should of course match AP settings except for the last digit(s) of the IP add; 5. try moving the client away from any RFI sources like cordless/wireless phones, microwave ovens and others; 6. at one time, signal strength to a client improved by moving the AP a couple of feet away from the original installation point. of course if your unit is mast mounted, then you have to move the mast as well or put up a new one. Hope this works for you. Good luck and pls post again how things turn up.

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