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Question

What is the area of the semicircle if its circumference is 12.5 cm?

A
6.28 cm2
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B
4.28 cm2
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C
2.28 cm2
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D
1.28 cm2
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Solution

The correct option is B 6.28 cm2
Circumference of a semicircle =πr
12.5=πr
r=3.984
Area of the semicircle =12πr
=12π(4)
=6.28 cm2

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