Question

A cylinder has a diameter of 40 feet and a height of 32 feet. What is the surface area of the cylinder? Express the answer in

terms of

Recall the formula SA-2x + 2x

1,320xit

1,792sit

2,080sft

2.640317

Answer 1

`6524.51 ft^2`

Explanation:

The surface area of a cylinder is given as;

`SA = 2\pi rh + 2\pi r^2`

where r = radius

h = height

The cylinder has a height of 32 feet and a diameter of 40 feet. This means that the radius is:

40 / 2 = 20 feet

The surface area is therefore:

`SA = (2*\pi* 20 * 32) + (2*\pi *20^2)\\\\SA = 4021.24 + 2513.27\\\\SA = 6524.51 ft^2`

The surface area of the cylinder is
`6524.51 ft^2`.