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guan · May 11, 2009, 07:29 PM

So for A cylinder is measured and found to be 28 m long and 33 m in diameter.

1. What is the radius of the cylinder?
2. What is the volume of the cylinder in m3? m3

The volume of a cylinder is where R is the radius and L is the length.

1. 16.5
2. 23948.36 ? v=pix16x5^2.28 how should I write it as?

Perito · May 11, 2009, 08:35 PM

1. You are correct

2. $V = \pi r^2 h$

$V = \pi \, \times \, (16.5\,m)^2 \, \times \, 28 \,m \, = 7623 \, \pi \, m^3$

Does your teacher wish you to multiply out the value of pi or submit it as 7623 π? You can do it either way.

pardesh · May 13, 2009, 05:30 AM

If the volume of a unit is 1000 cubic feet what is its volume weight

Unknown008 · May 13, 2009, 08:13 AM

1000 cubic feet is approximately equal to 28.31 cubic metres, or 28317 decimetre cube.

A litre equals 1 decimetre cube.
So, you have 28317 litres of water.

Since a litre weighs a kilogram, you have 28300 kilograms (to 3significant figures)