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Q.

The value of circumference of a semicircle of radius 10 cm is ____.


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Detailed Solution

The value of circumference of a semicircle of radius 10 cm is 10π cm.
Given, radius of the semicircle is 10 cm.
We know that value of the circumference of the circle is 2πr.
The circumference of the semicircle is half of the value of the circumference of the circle.
So the value of circumference of the semicircle is 2πr2 = πr.
= 10π cm
So, the circumference is 10π cm.
Hence, the correct answer is 10π .
 
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