HOW DO I FIND THE PERIMETER OF A SEMICIRCLE WITH A RADIUS OF 9MM ?

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asked Apr 26, 2016 198k views

5 votes

HOW DO I FIND THE PERIMETER OF A SEMICIRCLE WITH A RADIUS OF 9MM ?

Mathematics
middle-school

Bibi Tahira asked

by Bibi Tahira

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2 Answers

6 votes

PI times diameter = 3.14 * ( 2*9mm) /2 = 28.27433388 mm this is the correct answer

Shabnam answered Apr 29, 2016

by Shabnam

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Perimeter = 2 × π × r

Perimeter = 2 × 3.14 × 9

Perimeter = 56.52

Perimeter = 56.52 ÷ 2

Perimeter = 28.26

The perimeter of a semicircle with a radius of 9mm is 28.26

Sajida answered May 1, 2016

by Sajida

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