Callum Davies
Posted on Thursday, 14 August, 2003 - 06:13 pm:
Can you tell me the formula for working out the volume of water in a circular pool?
The pool is 3.6m in diameter and the water is 0.75m deep.
Thanks!
Ian Short
Posted on Thursday, 14 August, 2003 - 08:06 pm:
The formula is,

p×r2×d,

where

r= radius (half the diameter)

d= depth

p = 3.141¼ (goes on forever).

The reason I know this is that p×r2 is the area of the disc and then I multiplied this by depthto get the volume.

If the pond had been square-shaped then I would have multiplied the area of a square by depth.

Is that okay?

Ian