Question

the radius of a semicircle if area is 27.72cm2​

Answer 1

Answer:

the radius of semicircle is 4.2 cm

Answer 2

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Radius→ 4.2cm

Step-by-step explanation:

Area of circle = πr²

Area of semi circle= πr²/2

27.72 = 22× r²/ 7× 2

27.72 = 11× r²/ 7

27.72 ×7 /11 = r²

17.64 = r²

r = 4.2cm

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