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Mensuration Practice Test 10
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© examsnet.com
Question : 24
Total: 40
The radius of a metallic cylinder is 3 cm and its height is 5 cm. It is melted and moulded into small cones each of height 1 cm with the base radius of 1 mm. The number of such cones formed is:
450
1,350
8,500
13,500
Validate
Solution:
Volume of the metallic cylinder =
π
r
2
h
=
π
(
3
)
2
.5
= 45π
Volume of the cone =
1
3
π
1
100
.
1
=
1
300
π
Number of the cones =
45
π
1
π
300
=
45
π
×
300
π
= 13,500 cones
© examsnet.com
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