Question

what is the surface area of a cylinder with the radius of 2 inches and height of 12 inches

Answer 1

hello

Answer 2

first find the area of the two circles on the ends.... then find the area of the rectangle of the body of the cylinder....

Answer 3

the area of the circles you know... its just \[A=(\pi)r^{2}\] and the area of the rectangle is the height times the circumference (as the circumference is the side of the rectangle.. of which you get the formula \[A=2(\pi)rh\]
now for the Surface Area you would get the formula:
\[SA=2(pi)r^{2}+2(pi)rh\]

Answer 4

SA=2(pi)r2+2(pi)rh
r=2in.
h=12in.
plug in then simplify