if the perimeter of a semi circular protractor is 72cm . Then the diameter of the protractor

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if the perimeter of a semi circular protractor is 72cm . Then the diameter of the protractor

Asked by ballaudayteja1984 | 26 Oct, 2023, 07:41: PM

Expert Answer

Perimeter of protractor = πr+2r , where r is radius .

begin mathsize 14px style left parenthesis space 2 space plus space straight pi space right parenthesis space straight r space equals space 72 space cm end style

begin mathsize 14px style r space equals space fraction numerator 72 over denominator left parenthesis space 2 plus space straight pi right parenthesis end fraction space c m space equals space 14 space c m end style

Diameter = 2 r = 28 cm

Answered by Thiyagarajan K | 26 Oct, 2023, 10:12: PM

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