If the perimeter of a semicircle protracter is 108cm , find the radius of the protractor
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Answered by
2
Perimeter of protector = Circumference of semicircle + 2r
Therefore,
108=πr+2r
108=(22/7+2)r
108=36/7r
R=108*7/36=21cm
Therefore,
108=πr+2r
108=(22/7+2)r
108=36/7r
R=108*7/36=21cm
mindeed:
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Answered by
2
Perimeter of protractor = pie × r + 2r
Perimeter = 108 cm
pie × r + 2r = 108
=> r ( 22/7 +2 ) = 108
=> r × 36/7 = 108
=> r = 108 × 7 /36 cm
=> r = 21cm
Perimeter = 108 cm
pie × r + 2r = 108
=> r ( 22/7 +2 ) = 108
=> r × 36/7 = 108
=> r = 108 × 7 /36 cm
=> r = 21cm
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bhai
Both are same
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