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The weight of a solid sphere of radius 6cm is 27kg. what is the weight of hollow sphere made up of same metal metal and 2cm thickness with external radius 8cm. |
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Answer» Answer: 18.5 k9 Description for CORRECT answer: Volume of solid sphere of RADIUS 4 cm = 43π(4)3cm3 Volume of hollow sphere = 43π[(8)3−(6)3]cm3 Weight of 43π(4)3cm3 = 4 KG Weight of 43π[(8)3−(6)3]cm3 = 443π(4)3 . 43π[(8)3−(6)3] =4(512−216)43 = 18.5 kg |
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