Question

If the number of square inches in the area of a circle is equal to the number of inches in its circumference,the diameter of the circle is

a. 4 inches
b. 2 inches
c. 1 inches
d. pi inches
e. 2 pi inches

please answer and explain
A = C
pi*r^2 = pi*D
pi*r^2 = pi*2r
Divide both sides by pi*r
r = 2 Inches.
D = 2r = 2 * 2 = 4 Inches.

Related Questions

If the number of square inches in the area of a circle is equal to the number of inches in its circu... Find the circumference of a circle with a diameter of 15.4 inches. Round your answer to the tenths p... What is the area of the sector of a circle with a central angle of 216° and a radius of 7 inches? Le...