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Andrew [12]
2 years ago
11

A circular picture is 8 inches in diameter.

Mathematics
1 answer:
Karolina [17]2 years ago
6 0

Answer:

Part A   C. 16π square inches

Part B  C. 36π square inches

Step-by-step explanation:

If we know the diameter, we can calculate the radius

d= 2r

8 = 2r

Divide by 2

8/2 =2r/2

4=r

The radius is 4 inches

Area of a circle is

A = pi *r^2

A = pi *4^2

A = 16 pi inches^2


Part B

If the frame is 2 inches wide, we add 2 to the radius

r = 4+2=6

A = pi r^2

A = pi *6^2

A = 36pi inches ^2

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