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Standard IX
Mathematics
Question
Calculate the volume of a cone for the above figure : (Use
π
=
3
)
27.7
m
3
28.8
m
3
26.8
m
3
25.55
m
3
A
27.7
m
3
B
28.8
m
3
C
25.55
m
3
D
26.8
m
3
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Solution
Verified by Toppr
Volume of a cone (V) =
1
3
×
π
r
2
h
=
1
3
×
3
×
r
2
×
0.8
D
i
a
m
e
t
e
r
=
12
m
∴
r
a
d
i
u
s
=
6
m
V
=
1
3
×
3
×
6
×
6
×
0.8
=
28.8
m
3
So, option B is correct.
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