1.

(1) Find the surface area and volume of a beach ball of diameter(Tt-22)42 cm.

Answer»

Surface area of sphere = 4πr²= 4*(22/7)*(42/2)²= 4*22*21*3= 5544 cm²

Volume = (4/3)πr³= (4/3)*(22/7)*(21)³= 38808 cm³

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