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Standard IX
Mathematics
Curved Surface area of a right circular cylinder
Question
The diameter of the base of a right circular cylinder is
21
c
m
and its height is
10
c
m
. What is the area of the curved surface?
660
c
m
2
1320
c
m
2
930
c
m
2
640
c
m
2
A
640
c
m
2
B
930
c
m
2
C
1320
c
m
2
D
660
c
m
2
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Solution
Verified by Toppr
D
i
a
m
e
t
e
r
=
21
c
m
R
a
d
i
u
s
=
21
2
c
m
H
e
i
g
h
t
=
10
c
m
We know that the curved surface area of the cylinder
=
2
π
r
h
=
2
×
22
7
×
21
2
×
10
=
220
×
3
=
660
c
m
2
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Similar Questions
Q1
The diameter of the base of a right circular cylinder is
21
c
m
and its height is
10
c
m
. What is the area of the curved surface?
View Solution
Q2
The curved surface area of a cylinder is 1320 cm
2
and its base has diameter 21 cm. Find the height of the cylinder.
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Q3
The curved surface area of a cylinder is 1320 cm
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and its base had diameter 21 cm. Find the height and the volume of the cylinder.