Question

20 points.
What is the surface area for the sphere below?

Answer 1

Surface area of a sphere is
`4 \pi r^2`

So
`4 \pi (5^2) = 100 \pi` square units

Choice B

Answer 2

Answer:
`100\pi\ units^2`

Explanation:

From the given picture, the radius of the given sphere = 5 units

We know that the surface area of a sphere is given by :-

`S.A.=4\pi r^2`

Therefore, the surface area of the given sphere will be :-

`S.A.=4\pi (5)^2=4\pi(25)=100\pi\ units^2`

Hence, the surface area for the sphere =
`100\pi\ units^2`