Question

A paint can holds 2.5 litres. (1 litre=1000cm^3)

The height is 15cm. What is the radius of the can?

Answer 1

the volume of the can = area x height
2500 = pi*r^2 * 15
r^2 = (2500)/(pi*15)
r = √((2500)/(pi*15))
r = 6.86 cm
the radius of the can is 6.68 cm