Question

What is the surface area of a sphere with a radius of 30 m? 1,800π m2 90,000π m2 3,600π m2 900π m2

Answer 1

The surface area A of a sphere:

`A=4 \pi r^2`
r - the radius


`r=30 \ m \\ \\ A=4 \pi * 30^2=4 \pi * 900=3600\pi \ [m^2]`

The surface area of the sphere is 3600π m².

Answer 2

C.
`3600\pi \text{ m}^2`

Explanation:

We are asked to find the surface area of a sphere with a radius of 30 m.

We will use surface area of sphere formula to solve our given problem.

`\text{Surface area of sphere}=4\pi r^2`, where r represents radius of sphere.

`\text{Surface area of sphere}=4\pi*(30\text{ m})^2`

`\text{Surface area of sphere}=4\pi*900\text{ m}^2`

`\text{Surface area of sphere}=3600\pi \text{ m}^2`

Therefore, the surface area of our given sphere is
`3600\pi \text{ m}^2` and option C is the correct choice.