What is the surface area of cylinder with radius of 2 cm and height 8 cm?

Expert Answers

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We know that the surface area of the cylinder is:

Surface area = area of the bases + area of the sides

The area of the bases = 2* area of the circle

                                = 2* r^2 *pi

The area of the side = circumference of the circle * height of the cylinder

                             = 2*pi*r  * h

Then the surface area is:

Surface area = 2r^2 * pi + h* 2*pi*r

Given r = 2   and h = 8

==> surface area = 2*(2^2)*pi + 8*2*pi*2

                          = 8pi + 32pi

                            = 40pi

                            = 125.66

Then the surface area is : 125.66 cm^2

Approved by eNotes Editorial Team
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