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10. Find the area of the circle with theK&Ufollowing dimensionsA. Diameter 21 m B. Radius 7 cmC. Diameter 7 m D. Radius 20 cm |
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Answer» area = π*r*r or π*d*d/4 A) 22*21*21/(7*4) = 11*3*21/2 = 346.5 m*m B) 22*7*7/7 = 154 cm*cm C) 22*7*7/(7*4) = 11*7/2 = 38.5 m*m D) 22*20*20/7 = 1256 cm*cm |
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