Question

A paint can can hold 2.5 litres, work out the radius of the can if the length is 17cm.

Answer 1

Do you know the formula for radius?

Answer 2

Do you know the formula for volume of a cylinder?*

Answer 3

Volume of a cylinder = pi * r ^2 * h

2.5 = 3.14 * r^2 * 17
2.5 = r^2 * 53.38

r^2 = 53.38/2.5 = 21.352
r = sqrt(21.352) = 4.52

so, radius = 4.52.

Answer 4

@kelly226 We're all really glad that you know how to do the math for this problem. But can you let the asker work it out themselves?

Answer 5

sry! yes