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CBSE Class 10 Maths (Basic) 2022 · Paper 430/4/1 · Question 14

Surface Areas and Volumes 4 marks Medium
A company deals in casting and moulding of metal on orders received from its clients. In one such order, company is supposed to make toys in the form of a hemisphere surmounted by a right circular cone of the same base radius as that of hemisphere. If the radius of the base of the cone is cm and height is cm.
h = 28 r = 21 r = 21 cone hemisphere
Fig. - 2: hemisphere surmounted by a cone
  1. aFind the volume of 50 toys.[2]
  2. bFind the ratio of the volume of hemisphere to the volume of cone.[2]

Answer

Volume of 50 toys cm; ratio hemisphere : cone

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