Question

Surface Area of Cylinders - Item 1175

You have a coin bank in the shape of a cylinder. It has a radius of 1.5 inches and a
height of 5 inches. What is the surface area of the coin bank? Use 3.14 to approximate
pi. Round your answer to the nearest hundredth.
Randy

Answer 1

The surface area is 47.1 sq in.

Explanation:

Given,

The height (h) of the coin (cylinder shaped) = 5 inches

The radius (r) = 1.5 inches

To find the surface area of the coin.

We need to find the lateral surface area of the coin.

Formula

The surface area of the coin of radius r and height h is 2πrh.

Now,

Putting the value of h and r and π=3.14 we get,

Area = 2×3.14×1.5×5 sq inches

= 47.1 sq in

Hence, the surface area is 47.1 sq in.