Answers

  • Brainly User
2016-03-15T20:43:55+05:30

ar. of semi circular region => 77 cm sq. = 22/7*r^2*1/2 => 77*7*2/22 = r^2

so....7 *7 = r^2 => 7cm =r...so perimeter of the semicircular region => 22/7 *7 + 2r => 22 cm + 14 = 36 cm

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