Question

Find the circumference and area of a circle with a diameter of 22 inches. Leave your answers in terms of pi.

a. C = 11π; A = 44π
b. C = 22π; A = 44π
c. C = 11π; A = 121π
d. C = 22π; A = 121π

Answer 1

The answer for this will be letter d. C = 22π and A = 121π. This is computed using the formula of C= Dπ which is C = (22)π. On the other hand, the area of this circle is computed by using the formula A = πr^2. This is computed as follows:
A = πr^2
A = π (22/2)^2
A = π (11)^2
A = 121π