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The length of a chain used …

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The length of a chain used as boundary of the semi circular park is 90cm .Find the area of the park
  • 1 answers

Yogita Ingle 5 years, 1 month ago

Length of the boundary of the semicircular park = 90 m
⇒ πr + 2r = 90
⇒ r(22/7 + 2) = 90
⇒ r = (90*7)/36
⇒ r = 17.5 m
Area of the semicircular park = 1/2πr²
= 1/2*22/7*17.5*17.5
= 481.25 sq m

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