Find the circumference and area of semi circle whose radius=5cm
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Step-by-step explanation:
Circumference of a semi circle = length of the curved side + length of straight edge
length of the curved side = circumference of the circle / 2 = πr
length of the straight edge = diameter = 2r
So circumference of the semi circle = πr+2r
=3.14x5 + 2x5
= 25.7 cm
Area of the semicircle = area of the circle /2
=πr²/2
=3.14x5²/2
=39.25 cm²
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