13. A solid cone of radius 5 cm and height 8 cm is mellos
and made into small spheres of radius 0,5 cm. Find
the number of spheres formed.
(ICSE 2011
Answers
Answered by
1
Answer:
Clearly what will theoretically not change after melting and reshaping of metal is its mass or volume.
so volume of cone = (1/3)πr^2h
= (1/3)*π 5^2 * 8
= 200π/3 cubic cm
volume of one sphere
= (4/3)πr^3
= (4/3)π*(0.5)^3
= (4/3)*π*0.125
= 0.5π/3
= 5π/30
= π/6 cubic cm
number of sphere = volume of cone/volume of one sphere
= (200π/3) / (π/6)
= 200π*6/3π
= 400.
Answered by
0
No.of sphere formed=400
Attachments:
Similar questions