Radius of base of a cone is 5 cm and its height is 12 cm.find its curved surface area
Answers
Answered by
10
CSA of Cone = pie*r*l
For slant height use Pythagoras Theorem
l=root(5^2+12^2)
l=13
=>22/7*13*5=204.28 cm^2
For slant height use Pythagoras Theorem
l=root(5^2+12^2)
l=13
=>22/7*13*5=204.28 cm^2
204.28cm sq.
Answered by
6
r = 5 cm
h = 12 cm
l = under root r squ + h squ
= 13 cm
Now, the curved surface area = πlr
= 22/7×13×5
= 204.203 cmsq
hope you get it.
h = 12 cm
l = under root r squ + h squ
= 13 cm
Now, the curved surface area = πlr
= 22/7×13×5
= 204.203 cmsq
hope you get it.
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I was right .even my answer was also 204.28cm.