How to work out volume

What do you mean by volume:

The amount of space the object occupies

How do you convert volume to litres 

For cubic centimetres  1,000.00

How do we measure it

m³

cm³

mm³

Volume of a rectangle 

hxbxl

Volume of a cylinder 

πxr²xh

Volume of a prism

1/3xπxr²xh

b=3m h=1.2m l=8m
bxhxl

3m x 1.2m x 8m

=28.8m³

28.8x1000

=28800L

one litre weighs one kilo so there for

the pool weighs 28800 kilos

Dia of 0.75m h = 1.5m

πxdxh

π x 0.75 x 1.5

=3.5m³

3.5 x 1000

3500