Question

A 54 cm long piece of wire is bent into the space of a semicircular are bounded by its diameter find its radius

Answer 1

r(π+2)=54
solve for r and get the answer

Answer 2

54cm = Perimeter of semi circle

pi x r + r = 54

22/7 x r + r = 54

2r = 54x7 / 22

2r = 378/ 22

2r = 17.18 cm

r = 8.59 cm

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