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Standard IX
Mathematics
Volume of a right circular cone
Question
Find the volume of a cone if the radius of its base 1.5 cm and its perpendicular height is 5 cm.
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Solution
Verified by Toppr
Given that, the radius of the base of a cone is
1.5
c
m
and its height is
5
c
m
.
To find out: The volume of the cone.
We know that, volume of a cone
=
1
3
×
π
r
2
h
∴
Volume of the given cone
=
1
3
×
22
7
×
1.5
2
×
5
[
∵
π
=
22
7
]
⇒
1
3
×
22
7
×
2.25
×
5
=
247.5
21
∴
Volume of the cone
=
11.79
c
m
3
.
Hence, the volume of the given cone is
11.79
c
m
3
.
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Find the volume of a cone if the radius of its base 1.5 cm and its perpendicular height is 5 cm.
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