Short Answer B
Step One
Find the radius
Spherical properties are generally calculated with the radius. You are given a diameter. the radius = 1/2 the diameter.
radius = d/2
radius = 10/2
radius = 5
Step 2
Find the surface area.
The surface area formula = 4*pi*r^2
p = 3.14
r = 5
The surface area = 4 * pi * 5^2
The surface area = 4 * pi * 25
The surface area = 100 * pi
Answer 100 pi <<<< answer.
