If P(3,2) and Q(7,10) are the endpoints of the diameter of a circle, what is the area of the circle in square units?

Question

1.) 2√5π

2.) 80π

3.) 4√5π

4.) 20π

Answer 1

Length of diameter = distance from P to Q = √ [(7-3)² + (10-2)²] = √80

Radius = √80/2 =

Area = π(radius)² = 20π