if two cones radius is equal and ratio of slant height is 5:3 then find the ratios of curved surface are of cones
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Explanation:
Hence theratio is 25 rato 9
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Answer:
Let the radius of the two cones be *r*
given that l1:l2 = 5:3
therefore l1/l2 = 5/3
csa of cone = πrl
let csa of one cone be c1 and c2 of the other
therefore , c1/c2 = πrl1/πrl2
(cancle π and r as they are common )
we get , l1/l2
5/3 (given in the question)
therefore the ratios of curved surface area of cones is 5:3
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