SPHERE
- a solid bounded by a closed surface every point of which is equidistant from a fixed point called the center.
Illustration:
Area of a Sphere:
A = 4 πr2
Where:
A = area
π = pi = constant = 3.1416
r = radius
Problem:
1. A spherical shape toy ball has the radius of 4 inches. Find the area of the said toy.
Given:
r = 4 in.
Required: Area:
Solution:
A = 4 πr2
= 4* π *( 4 in. )2
= 64π in2 ; final answer
