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ipn [44]
3 years ago
12

A circular picture is 8 inches in diameter.

Mathematics
1 answer:
velikii [3]3 years ago
7 0

The formula of an area of a circle with radius r:


A=\pi r^2


Part A.

We have diameter of the circle d = 8 in. The diameter of a circle is equal two times length of a radius.

Therefore:


r=\dfrac{d}{2}\to r=\dfrac{8}{2}=4\ in


Calculate the area:


A=\pi\cdot4^2=16\pi\ in^2


Answer: C. 16π square inches.


Part 2.

Look at the picture.


Total area:


A=\pi\cdot6^2=36\pi\ in^2


Answer: C. 36π square inches

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