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I need the conversion factor for volume(m^3) into sq.km

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You can't convert volume to area.

Posted on Sep 16, 2011

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2 Answers

Convert one square mile into kilometres


1 square mile = 2.589988 sq klms
a square mile is an area 1 mile by 1 mile so the conversion is sq klms not the linear measurement of klm
1 mile = 1.609344 klms

May 06, 2017 | Office Equipment & Supplies

1 Answer

I need to know how much stone in tons I need to fill 8.5 acre at 1.5 ft depth


Stone is approximated at about 2700 lbs. per cu. yd.
An acre is 43560 sq. ft.
8.5 acres is 370260 sq. ft.
There 9 sq.ft. per sq. yd., thus there are 41140 sq. yds. in 8.5 acres.
A cubic yard is 3 feet by 3 feet by 3 feet (LxWxH).
Since you are only going to be at 1.5 feet, each square yard is equal to 1/2 cubic yard, so to figure the cubic yards divide sq.yds. by 2, thus you get 20570 cu. yds. of stone.

20570 x 2700 = 55539000 pounds. Divide by 2000 to get tons:
55539000/2000 = 27769.5 tons.

Nov 16, 2016 | Office Equipment & Supplies

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Square feet converted to square metres


Simply square the conversion factor between feet and metres to get the conversion factor between square feet and square metres.

One foot is 0.3048 metres, so squaring that gives one square foot is 0.09290304 square metres.

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The difference between the inner and outer surfaces of a cylindrical pipe is 88cm sq..if the height of the cylindrical pipe is 14cm and the volume is 176cm cube. Find the inner and outer radius of the...


The surface area of the outer surface is the circumference of the outside of the pipe times its length. So, if OR is the radius of the outside of the pipe and SO is the outer surface area,
SO = 2 * pi * OR * 14
Similarly, the surface area of the outer surface is SI = 2 * pi * IR *14 (if SI is the inner surface area and IR is the radius of the inside of the pipe.
The question states that the difference between the outside surface area and the inside surface area is 88 sq. cm:
SO - SI = 88 ; substituting:
(2 * pi * OR * 14) - (2 * pi * IR * 14) = 88 ; factoring
(2 * pi * 14) (OR - IR) = 88 ;dividing both sides by 2*pi*14
(OR - IR) = 88/(2 * pi) = 88/(2 * 3.14159*14) = 1.00
So, the outside radius is 1 cm more than the inside radius.

It's not clear if the volume stated is the volume of the metal in the pipe or the volume of air inside the pipe, so I will solve it both ways:
If volume of 176cc is of the air inside, the formula for this volume is 14 * pi * IR *IR
176 = 14 * 3.14159 * IR * IR ; dividing both sides by 14 * 3.14159
176/(14 * 3.14159) = IR * IR ; doing the arithmetic
4 = IR * IR ; taking the square root of both sides
sqrt(4) = IR
IR = 2 cm
substituting back into the first equation, the OR is 1cm more than the IR, so
OR = 3 cm

If volume of 176cc is of the iron in the pipe, the formula for that volume is the difference between the volume of the outside of the pipe and the volume of the inside of the pipe, or
(14 * pi * OR * OR) - (14 * pi * IR * IR) = 176 ; factoring
(14 * pi) ((OR * OR) - (IR * IR)) = 176 ; dividing both sides by 14 * pi
((OR * OR) - (IR * IR)) = 176/(14 * 3.14159) = 4
but, since OR is 1 cm more than IR (from above), we can substitute OR = IR + 1
and OR * OR = (IR + 1) * (IR + 1) = (IR*IR) + 2*IR +1
So, ((OR * OR) - (IR * IR)) = 4 becomes
(IR*IR) + 2*IR +1 - (IR*IR) = 4 ; simplifying (IRsquared - IRsquared = 0)
2*IR + 1 = 4 ; subtract 1 from both sides
2*IR = 3 ; divide both sides by 2
IR = 3/2 ;
IR = 1.5cm
OR = 2.5cm

Jan 11, 2011 | Mathsoft StudyWorks! Mathematics Deluxe...

1 Answer

How to change from mph to km per hour?


Hi chris. If you are asking for the conversion factors, here you go:
1.6 km/h = 1 mph
1 km/h = 0.625 mph
so divide the km/h speed by 1.6 to have it in mph
or multiply the mph speed by 1.6 to have it in km/h


Here is a conversion tool you may like http://www.convertunits.com/from/mph/to/kph

and here is another http://www.eforecourt.com/mph_kph_speed_convert.htm

Dec 04, 2010 | Cycling

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Spacks on 15" orion 2 xtreme sub


Here are the Specs from Orion's spec sheet.

Sensitivity @ 2.84V/1m 93DB
FS 23Hz
QMS 9.05
QES 0.47
Qts 0.44
BL (Force Factor) 8.7 TM
SD (Piston Area) 500 sq.CM \ 78 sq. in.
VAS (Volume Acoustic suspension) 224 Liters \ 7.92cu.ft
Xmax 7.75MM \ 0.30 in.

Enclosure Recommendations
Sealed Volume 1.60 cu. ft.
Vented Volume 2.75 cu. ft.
Port Dia (Inside Dia.) 4 in.
Port Length 8.5 in.

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2 Answers

I need an idea of square foot coverage


There are more factors than sq ft. You have to factor in window surface and R factor of insulation.

Aug 18, 2009 | Heating & Cooling

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