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Standard IX
Mathematics
Curved Surface area of a right circular cylinder
Question
The diameter of a cylinder is
12
m and its height is
10
m. Find the curved surface area of a cylinder.
240
π
c
m
2
220
π
m
2
120
π
m
2
230
π
m
m
2
A
120
π
m
2
B
220
π
m
2
C
240
π
c
m
2
D
230
π
m
m
2
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Solution
Verified by Toppr
Curved surface area of cylinder is
A
=
2
π
r
h
Here, the diameter is
12
m and therefore, the radius is half of diameter that is
r
=
6
m and height is
10
m.
Thus,
A
=
2
π
r
h
=
2
×
π
×
6
×
10
=
120
π
m
2
Hence, the c
urved surface area
of the cylinder is
120
π
m
2
.
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