find TSA of a cone if its slant height is 21 m and diameter equal 24 metre
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Answered by
6
Here,
l( slant height)=21m
Diameter( 2r)=24m
So radius( r)=24/2=12m
Now,
TSA of cone = pi r (l+r)
=> 12pi(21+12)
=> 12pi×33
=>1244.57m2
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