The radius for number 2 is 9 inches the height is 20 inches. So you plug in those numbers into the equation to make: pi x 9^2 x 20 = 5089.38
The radius for number 3 is 10 inches and the height is 3 inches. So you plug in those numbers into the equation to make: pi x 10^2 x 3 = 942.48
The radius for number 4 is 5 inches and the height is 8 inches. So you plug in those numbers into the equation to make: pi x 5^2x 8 = 628.32
The radius for number 5 is 2 centimeters and the height is 5 centimeters. So you plug in those numbers into the equation to make: pi x 2^2(5) = 62.83