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Standard IX
Mathematics
Curved surface area of a Right Circular cone
Question
The diameter of a cone is
14
cm and its slant height is
10
cm. Find its curved surface area.
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Solution
Verified by Toppr
Given, Diameter
d
=
14
c
m
∴
r
=
14
2
=
7
c
m
,
l
=
10
cm
Curved surface area of a cone
=
π
r
l
=
22
7
×
7
c
m
×
10
c
m
=
220
c
m
2
.
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