We have built our kids a sandpit and need to know how much sand to put in it.asically I have forgotten how to work out the volume of a shape. The sandpit dimentions are:
2.3m long x 2.3 m wide x .3 metres deep.
Can you refresshmy brain on this so simple maths problems.
Thanks
2007-11-25 20:09:56 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Luckily this one is easy enough.
To calculate the volume you multiply the width x length x depth
So in your case it will be: 2.3 x 2.3 x 0.3 = 1.587 cubic meters
Don't worry, everybody forgets these things at some point in time.
2007-11-25 20:18:06 · answer #1 · answered by Anonymous · 0⤊ 0⤋
You asked both about volume and mass. You have several answers already that explain how to get the volume of a rectangular shape.
You simply multiply each of the dimensions in meters to get the total volume.
Volume = Length x Width x Depth
= 2.3m x 2.3m x 0.3m
= 1.587 m^3
However, if you need to know how much that sand will weigh, you need to know the *density* of the sand. For example, wet sand is more dense than dry sand. Compacted sand is more dense than loose sand.
The density of sand can vary depending on the grain size and moisture content and how tightly it is compacted
If you dont need very accurate densities the following should help
Dry sand 1780 Kg/m^3
Wet sand 1920 Kg/m^3
Compacted sand 2080 Kg/m^3
Using your 1.587 m^3 and the density of dry sand, I come out with:
1.587 x 1780 = 2,825 Kg
Sand usually comes in about 20-25 Kg bags, so you'll need about 115 to 140 bags of "play" sand to fill the sandbox.
2007-11-26 05:16:16 · answer #2 · answered by Puzzling 7 · 0⤊ 0⤋
The above answers are correct, although some people misplaced the decimal by multiplying by 3 instead of .3.
Length x Width x Depth
2.3*2.3*.3=1.587 m^3
Everyone forgets the basics occasionally. Don't worry about it.
2007-11-26 04:22:21 · answer #3 · answered by j_r_colbert 2 · 0⤊ 0⤋
Volume = length times width times hight
Your answer is 1.58 cubic metres.
2007-11-26 04:18:11 · answer #4 · answered by PsychgirlG 1 · 0⤊ 0⤋
volume of sand pit
= 2.3m x 2.3m x 0.3m
= 1.5870 cubic metres or m^3
2007-11-26 04:16:46 · answer #5 · answered by sv 7 · 1⤊ 0⤋
You'll need 15.87m cubed of sand for your sand pit.
The formula is simply length x width x depth.
2007-11-26 04:16:11 · answer #6 · answered by ]sara[ 3 · 1⤊ 1⤋
the volume of an object is its length,width and depth multiplied together i.e. (2.3)(2.3)(3)=15,87metres cubed.get it?
2007-11-26 04:19:32 · answer #7 · answered by tania 2 · 0⤊ 0⤋
i know what u mean!! at skool we r doing that
2007-11-26 04:18:28 · answer #8 · answered by pimpin101 1 · 0⤊ 1⤋
are you sure the problem is stupid or somebody else?
2007-11-26 04:14:49 · answer #9 · answered by Theta40 7 · 1⤊ 6⤋