Question

The area of a circle is represented by the equation A = π r 2 , where r is the radius. The area is 64 π m 2 . What is the length of the diameter? 4 meters 4 meters 8 meters 8 meters 16 meters 16 meters 32 meters 32 meters

Answer 1

16 meters

Explanation:

Area of a circle = πr²

Diameter of a circle = 2 x r

where r = radius

If area of the circle is given, the radius can be determined by finding the square root of the area

64 πm² = πr²

r² = 64 πm²

r = √64

r = 8m

diameter = 8 x 2 = 16m