The area of canvas required to construct a cone of height 24 m and base radius 7 m is
500m2
520m2
550m2
none of these
A
500m2
B
520m2
C
none of these
D
550m2
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Solution
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Consider the given equation,
Consider the given equation,
r=7
h=24
Req. Canvas= CSA of cone =πrl
Also, l=√242+72
=√576+49=√625
l=25m
Now,
Req. Canvas=π×7×25
=22×25
=550m
Area req. of canvas is 550m
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