1.

If the diameter of a semi circular protactor is 14 cm, then find its perimeter.

Answer» R is 22
Radius ( r) :- 14/2 = 7 cm Circumference of circle = => 2× pi × r => 2 × 22/7 × 7 cm => 44 cm Perimeter of semicircle = Circumference of circle ÷ 2=> 44/2 cm => 22 cm -: answer


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