Using 3.14 for pi, what is the volume of a cylinder with a radius of 3 and a height of 10?

Correct answer to question 47 (Mathematics Knowledge): 282.6

Method

A cylinder's volume is the area of its circular base times its height. The base is 3.14 x 9 = 28.26, and multiplying by 10 gives 282.6. Using the radius instead of the radius squared gives 94.2.