Question

A right cylinder has a radius of 7 feet and a height of 4 feet.What is the approximate surface area of the cylinder?

Answer 1

For a right cylinder :

Surface Area (A) = 2rh +2r^2

where r = 7 feet

and h = 4 feet

Substituting the above values into the S.Area formula will be :

SA =( 2** 7*4) +2(7^2)

= 56 + 98

= 156 ft^2

• , Surface area = 490 feet^2