(e)
76. Weight of a solid metallic sphere of
radius 4 cm is 4 kg. The weight of a
hollow sphere made with same metal,
whose outer diameter is 16 cm and inner
diameter is 12 cm, is
(a) 20.5 kg (b) 15.5 kg
(c) 16.5 kg (d) 18.5 kg
Answers
Answered by
0
Step-by-step explanation:
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.
so option d is correct answer.
Answered by
0
Step-by-step explanation:
option d is the correct answer
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