if the perimeter of a semi circle is 36cm what will be diameter
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We know that,
Perimeter of semi circle = Length of arc + Diameter
36 = pi × r + 2r
=> r ( pi +2) = 36
=> r ( 22/7 + 2) = 36
=> r ( 36 / 7) = 36
=> r = 36 × 7 / 36
=> Radius = 7 cm
Diameter = 2 × 7 = 14 cm
Perimeter of semi circle = Length of arc + Diameter
36 = pi × r + 2r
=> r ( pi +2) = 36
=> r ( 22/7 + 2) = 36
=> r ( 36 / 7) = 36
=> r = 36 × 7 / 36
=> Radius = 7 cm
Diameter = 2 × 7 = 14 cm
gaurav2013c:
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