1.

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.​

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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