Q. 55.0( 4 Votes )
If the radius and
Answer :
We have
Let radius of cone = 7x
Let slant height = 13x
Curved surface area of cone = 286 cm2
= πrl = 286 , 22/7×7x×13x = 286
= x2 = 1
= x = 1
Hence radius of cone = 7×1 = 7 cm
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