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.
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
1 answer