find the area and perimeter of semicircle of radious 21cm
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2
Radius = 21 cm
Area = π r² = 441 π cm²
Circumference = 2πr = 42π cm
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Answered by
1
area of semi circle is pie×r^2/2
=22/7×21×21/2
=11×3×21
=33×2 1
=693cm^2
perimeter of semicircle=pi×r
=22/7×21
=22×3
=66cm
=22/7×21×21/2
=11×3×21
=33×2 1
=693cm^2
perimeter of semicircle=pi×r
=22/7×21
=22×3
=66cm
thanks u bro
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