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Given- Diameter = 8cm R = 4cm, r = 4-1/2=7/2 cm Volume of the ball = 4 π /3[R3-r3] = (4/3) ×22/7 [64-343/8] = 88/21 [(512-343)/8] = (88/21) ×169/8 =1859/21 =88.52cm 3
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