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laiz [17]
3 years ago
14

A circular mirror has a diameter of 12 inches. A circular frame that is 3 inches wide surrounds the mirror. What is the combined

area, in square inches, of the circular mirror and the frame
Mathematics
1 answer:
soldi70 [24.7K]3 years ago
8 0

Answer:

176.71 in^{2}

Step-by-step explanation:

The equation to use to find the radius of a circle is r = \frac{d}{2}

The equation to use to find the area of a circle is A = \pi r^{2}

First, add 3 inches to the diameter of 12 inches. You will get 15 inches.

Second, you will want to find the radius. Substitute 15 for d. Solve to get the radius.

r = \frac{15}{2}

r = 7.5

The radius is 7.5 inches.

Next, you substitute 7.5 for r in the area equation. Solve to get the area.

A = \pi (7.5)^{2}

A = 176.71 in^{2}

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