If the area of a semicircle is 84 cm $^{2}$ , then the area of the circle is .......................

144 cm

^{2}

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42 cm

^{2}

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168 cm

^{2}

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288 cm

^{2}

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Solution

The correct option is D 168 cm $^{2}$
We know that the area of semicircle is one half of a circle .
Given area of semicircle is $84 c m^{2}$
Then area of circle $= 2 \times 84$
$= 168 c m^{2}$

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If the area of a semicircle is 84 cm2, then the area of the circle is .......................

The correct option is D 168 cm2We know that the area of semicircle is one half of a circle .Given area of semicircle is 84cm2Then area of circle =2×84=168cm2

If the area of a semicircle is 84 cm $^{2}$ , then the area of the circle is .......................

The correct option is D 168 cm $^{2}$
We know that the area of semicircle is one half of a circle .
Given area of semicircle is $84 c m^{2}$
Then area of circle $= 2 \times 84$
$= 168 c m^{2}$