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

Question

asked Jun 14, 2017 81.9k views

2 Answers

Fried Hoeben · Answer 1 · 2017-06-18T14:52:30+0000

Answer:

$2080\pi \text{ square ft}$

Explanation:

Since, the surface area of a cylinder is,

$A=2\pi r( r+h)$

Where, r is radius,

h is the height,

Here,

The diameter of the cylinder = 40 ft,

So, the radius of the cylinder, r =
$(40)/(2)=20\text{ ft}$

And, h = 32 ft

Thus, the surface area of the cylinder is,

$A=2\pi (20)(20+32)$

$=40\pi (52)$

$=2080\pi \text{ square ft}$