A circular frame that is three inches wide surrounds the mirror with 12 inch diameter.

What is the combined area in square inches?

is 81pi .its on my math homework

The answer is 36pi

It is 81 it is not 36pi.

To find the combined area of the circular frame and the mirror, we need to subtract the area of the mirror from the area of the frame.

First, let's find the area of the mirror:
The diameter of the mirror is given as 12 inches, which means the radius (half the diameter) is 6 inches. The formula to find the area of a circle is A = πr^2, where A represents the area and r represents the radius.

So, the area of the mirror is:
A_mirror = π(6)^2
A_mirror = π * 36
A_mirror ≈ 113.1 square inches

Next, let's find the area of the frame:
The frame surrounds the mirror with a width of 3 inches. To find the outer radius, we add the width to the radius of the mirror.
Outer radius = 6 inches (mirror radius) + 3 inches (frame width)
Outer radius = 9 inches

The formula to find the area of a circle still applies, but this time we use the outer radius:
A_frame = π(9)^2
A_frame = π * 81
A_frame ≈ 254.5 square inches

Finally, we can calculate the combined area by subtracting the area of the mirror from the area of the frame:
Combined area = A_frame - A_mirror
Combined area ≈ 254.5 square inches - 113.1 square inches
Combined area ≈ 141.4 square inches

Therefore, the combined area of the circular frame and the mirror is approximately 141.4 square inches.

The mirror and frame has a 12 + 6 = 18 inch diameter.

A = pi * r^2

A = 3.14 * 81

A = _______ square inches

254.34

Wrong