Question

if the area of a semicircular region is 77 CM square find its perimeter

Answer 1

As we know, Area of semicircle = ½πr². So, ½πr² = 77 => ½ × 22/7 × r² = 77 => 11/7 × r² = 77 => r² = 77 × 7/11 => r² = 49

Answer 2

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