Question

A square with area of 16 cm^2 is rotated to form cylinder. What is the volume of the cylinder?

Answer 1

The Area of a square can be written as
`A = s^(2)` where s is side length. Hence, s² = 16 and the side is 4. So now you know the height of the cylinder is 4. The diameter is also 4 because all sides are equal in a square. Hence,
`V = \pi r^(2) h` and V = (4)²π(4) and finally, V = 64π