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Standard X
Mathematics
Question
How many spherical bullets can be made out of a lead cylinder
15
cm high and with base radius
3
cm, each bullet being
5
mm in diameter?
6000
7260
6480
7800
A
6000
B
7260
C
7800
D
6480
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Solution
Verified by Toppr
Volume of cylinder
V
=
π
r
2
h
=
9
×
15
π
=
135
π
Volume of bullet
v
=
4
3
π
r
3
=
4
3
×
2.5
3
×
10
−
3
π
Number of bullets
=
V
v
=
135
π
×
10
3
×
3
4
×
2.5
3
×
π
=
6480
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