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Probability

Question
CBSEENMA9003437

Find the ratio of the curved surface areas of two cones if their diameters of the bases are equal and slant heights are in the ratio 4 : 3.

Solution
fraction numerator left parenthesis CSA right parenthesis subscript 1 over denominator left parenthesis CSA right parenthesis subscript 2 end fraction equals fraction numerator πr left parenthesis 4 straight k right parenthesis over denominator πr left parenthesis 3 straight k right parenthesis end fraction equals 4 over 3 equals 4 space colon space 3