Question

Find the surface area of a sphere with a diameter 10 cm.

Answer 1

Answer:

c.

314 sq. cm

Step-by-step explanation:

Surface area of sphere:

The surface area of an sphere with radius r is given by:

$S = 4\pi r^2$

Find the surface area of a sphere with a diameter 10 cm.

Radius is half the diameter, so $r = \frac{10}{2} = 5$

The surface area is:

$S = 4\pi*5^2 = 100\pi = 314$

314 square centimeters, and option c is the answer.