Hey!!!!_________For a semicircle=> Perimeter = 36M=> πr + 2R = 36(2r = d)=> 22r/7 + 2r = 36=> (22r + 14r)/7 = 36=> 36r = 36 x 7=> r = 7cmArea = 1/2x πr²=> Area =1/2x 22/7 x 7 x 7=> Area = 77 cm²___________Hope this helps ✌️
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