Question

A sphere has a diameter of 11 inches. What is its surface area? Use 3.14 to approximate π. Round to the nearest hundredth if necessary.

Answer 1

379.94

Explanation:

Answer 2

The surface area is
`379.94in^2`

Explanation:

Given

Shape: Sphere

`D= 11\ in` - -- Diameter

Required

Determine the surface area (A)

This is calculated using:

`A = 4\pi r^2`

Where

`r = (1)/(2)D`

`r = (1)/(2)*11`

`r = 5.5`

So, we have:

`A = 4 * 3.14 * 5.5^2`

`A = 4 * 3.14 * 30.25`

`A = 379.94`

Hence, the surface area is
`379.94in^2`