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How many spherical bearings can be formed from a cylinder 72cm high and with radius of 8cm, each bearing being 8cm in diameter?1). 542). 453). 634). 52 |
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Answer» Volume of cylinder = πr2h = π × 8 × 8 × 72 = (72 × 64) π cm3 Volume of SPHERE = (4/3) πr3 = (4/3) π × 4 × 4 × 4 = (256/3) π cm3 Number of spherical bearings = Volume of cylinder/ volume of sphere = (72 × 64) π cm3/(256/3) π cm3 ∴ Number of spherical bearings will be 54. |
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