find the perimeter and the area of the semicircle
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As the perimeter of a circle is 2πr or πd. So, the perimeter of a semicircle is 1/2 (πd) + d or πr + 2r, where r is the radius.
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Semi circle Formula.
Area (πr2)/2
Perimeter (Circumference) πr + 2r
Angle in a semicircle 90 degrees, i.e. right angle
Central angle 180 degrees
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