What is the surface area of a cylinder with a 12 m radius and 14 m height of the cylinder?

Question

The cylinder top and bottom radius is 12 meters and the height of the cylinder is 14 meters. Help!

Answer 1

The formula is 2*PI*r^2 +2*PI*rh where r = radius and h = height so plugging in those values:

2 * 3.14 * 12^2 + 2 * 3.14 * 12 * 14 = 1959.36m^2

Answer 2

The surface area of a cylinder is simply its circumference times its height.

The circumference of the cylinder is pi * D or 2 * pi * R

So the area of your cylinder is 2 * pi * 12 * 14

BTW, if you want the surface area of a cylindrical solid, don't forget to add the surface area of the top and bottom disks as well. The area of each of those is pi * R^2

Answer 3

First find the area of the top and bottom circles
"Pi*r(squared)": 3.14*12*12= 452.16

Then find the circumference of the cylinder
"Pi*d": 3.14*24 = 75.36

Then find the area of the outside of the cylinder
"Circumference of circle*cylinder height": 75.36*14 = 1055.04

Then add the area of the two circles to the side area of the cylinder: 1055.04 + (452.16 * 2) = 1959.36