Answer:
Part A
C. 36π
Part B
D. 81π
Step-by-step explanation:
The general formula for the area of a circle is:
A = πr², where 'r' represents the radius of the circle
Since the mirror has a diameter of 12 inches, the radius is half of that measure, or 6 inches. So, for the area of just the mirror:
A = π6² = 36π in²
Adding a circular frame around the mirror increases the radius by another 3 inches:
6 in + 3 in = 9 in
Given the new radius, use the same formula to calculate the overall area:
A = π9² = 81π in²
