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The length of the arc of semi circle is 15 cm calculate the area of the semi circle ?​

Answer :

Answer:

L = pi R       length of arc of semi-circle

A = pi R^2     area of circle

A = pi * (L / pi)^2      substituting from first equation

A = L^2 / pi = 15^2 / 3.14 = 71.6 cm^2

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