Question about Texas Instruments TI-15 Explorer Calculator

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When i try to use the pi key with another operation it does not compute. For example if I am trying to multiply 10 times pi, the calculator reads 10pi

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Press the FD (fraction to decimal) button after you calculate 10 times pi, This will give you the
calculation in decimal form.

Posted on Mar 11, 2011

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How do you simplify the exponent on the calculator?


I assume 13m/2 is the radius of the sphere and you are trying to calculate the volume of the sphere.

The first thing we have to think of is BEDMAS, the order of operations, as some calculators do them correctly, while others do not. Let's be safe and do the BEDMAS manually so we know we will get the correct answer.

B - brackets - enter 13/2 in the calculator - hit enter
E - exponents - with the answer from the first line in the calculator, use the hat key (^) or the y to the x key to raise this to the third power (exponent 3).
M - multiply - with the answer from the line above, multiply this by pi or use what you are instructed to use or use 3.14159, then multiply by 4 and divide by 3.

You should have your answer.

Good luck.


Jul 12, 2015 | Office Equipment & Supplies

1 Answer

It wont give me the value when i multiply like 6 x pi

Your calculator may be able to use the symbol Pi. If it gives you a result with Pi, you should convert it to a decimal approximation. There must be a key to convert.

Nov 12, 2013 | Canon F-719SG Green Scientific Calculator...

1 Answer

I can get pi, but then when i need to multiply it by a number (example: 6), It just gives me that number, with the pi sign beside it. it wont give me an answer.

When in MathIO the calculator displays pi symbolically. If you want the numerical value of an expression, press [SHIFT][=], not just [=]. You can try pressing the [SD] key to toggle between fraction`/radical to decimal. You can also configure the calculator to use LineIO by default.

May 22, 2011 | Casio FX-115ES Scientific Calculator

1 Answer

Trying to find the surface area of a sphere given the volume: V = 4/3 X pi X r cube problem given vol. find the surface area v = 5000 5000(3/4 pi =r cube the book reads: 3 cube before and the square...

Almost exactly the way it's written in the book.

In the LineIO mode press
3 SHIFT [xth-root] 5 0 0 0 * 3 / ( 4 * SHIFT [pi] ) ) =

In the MathIO mode press
SHIFT [xth-root] 3 right-arrow 5 0 0 0 * 3 / ( 4 * SHIFT [pi]) =

xth-root is the shifted function of the key just below and right of the big round cursor pad.
* is the multiply key
/ is the divide key
pi is the shifted function of the x10^x key in the middle of the bottom row

BTW there's no "square root" in this problem. There's a "cube root" or "third root". Square root is the second root.

May 14, 2011 | Casio fx-300ES Calculator

1 Answer

How do I multiply by Pi. (Where's the Pi button on the Casio fx-300ES)

pi is the shifted function of the x10^x key, middle of the bottom row.

Apr 05, 2011 | Casio fx-300ES Calculator

1 Answer

When I try to use arithmetic operations in RPN mode; the calculator computes the (g) function. Example: 2(enter) 5(enter) (x) will result in 25 (5^2) as opposed to 10 (5 x 2) =s

Your key sequence is calculating 5*5, which is 25. If you press * again, you will get 50, which is 2*5*5. The second ENTER lifts the 5 into Y, leaving two copies of 5 on the stack, which get multiplied together.

To calculate 2*5, press 2 ENTER 5 * . Note only one ENTER, used to separate numbers.

Mar 22, 2011 | HP 12c Calculator

1 Answer

I want to multiply 1.66 X 10 to the minus 27 Using a TI-30XA

What do you want to multiply it by? As an example, to multiply it by three, press
1 . 6 6 EE 1 0 +/- 2 7 * 3 =

EE is the key just above the 7 key, +/- is the key just to the right of the decimal point key.

Mar 08, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

Need tub capacity

Things You'll Need:

* Measuring tape


Measure the depth from inside the washer with a measuring tape. Start from the back of the inside of the washer towards you to the front of the washer. Measure the depth from a top loading washer from the bottom of the inside of the washer to the top. For example, a washing machine may have a depth of two feet.

Measure the height inside the washer unit. The height inside the washer is from the bottom of the inside of the washer to the top of the inside of the washer for a front loading washing. The height is from one side of the inside of the washer to the other side in a top loading washer. For example, the inside of a washer may be one and a half feet, or 1.5 feet.

Divide the height calculated in step 2 by two, and square it. In the example, 1.5 divided by two equals 0.75, and 0.75 to the power of 2 equals 0.5625.

Multiply the number calculated in step 3 by the depth of the washing machine. In the example, 0.5625 times two equals 1.125.

Multiply the number calculated in step 4 by Pi to determine the capacity. Pi is generally estimated as 3.14. In the example, 1.125 times 3.14 equals a washer capacity of 3.5325 cubic feet

Dec 21, 2010 | Washing Machines

4 Answers

How can i enter a polar form number with angle to convert into a rect form

how can i enter a polar form number with angle to convert into a complex numbe(a+bi)

Apr 28, 2010 | Casio Algebra FX 2.0 Calculator

1 Answer

TI-30x...I am trying to figure out how I use this calculator

Entering the keys and number as you write it can be done with enough parenthees to make sure calculator does what we intend it to.
But I would rather use the commutativity propertie of multiplications to same me some extra ().

Step 1
4 [(+/- change sign)][2nd][10 to the x] [ X ]6.1923 [=]
I first calculate the product 6.1928 x 10^-4 then take the square of the result. Because you can never be sure that the calculator takes 6.1923 to power 2 then multiply or multiply 6.1928 x 10^-4 and raise to power 2.
You can force the calculator with an opening parenthesis and a closing one but if you omit the ) and get an error, it may be hard to detect.

Hope it helps.

Sep 15, 2009 | Texas Instruments TI-30 XIIS Calculator

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