Question

Find the surface area of a sphere to the nearest square unit 2inches

Answer 1

50.24 inches² is the surface area of the sphere.

Explanation:

we have to find the surface area of the sphere to the nearest square unit 2 inches.

Given: radius of sphere = 2 inches

we have to find the surface area

the formula to find the surface area is given below:

A = 4 π r²

where r represent the radius of sphere

putting r = 2 inches in above formula we get

A = 4π(2)²

solving we get

A = 4 π (4)

A = 16 π

using π = 3.14 we get

A = 16 × 3.14

A = 50.24 inches² is the surface area of sphere.

Answer 2

The surface area of sphere having 2 inches radius is 50.24 inches²

Explanation:

Given : radius of sphere = 2 inches

We have to find the surface area of the sphere

Surface area of sphere is given by :

`A=4\pi r^2`

Given radius of sphere is 2 inches

Thus, Surface area of sphere having radius 2 inches is

`\Rightarrow A=4\pi (2)^2`

Solving, we get,

`\Rightarrow A=4\pi 4`

`\Rightarrow A=16\pi`

Using
`\pi=3.14` , we get

`\Rightarrow A=16* 3.14`

`\Rightarrow A=50.24`

Thus, the surface area of sphere having 2 inches radius is 50.24 inches²