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CBSE Class 9 Answered

The radii of two cones are equal. If their slant heights are in the ratio 5:8, find the ratio of their curved surface area.
Asked by Sanjuhi4998 | 29 Jan, 2022, 01:35: PM
Expert Answer
Curved surface area of a cone = pi r l
Let r be the radii of the two cones
Let l1 and l2 be the slant heights of cone 1 and cone 2 respectively.
fraction numerator Curved space surface space area space of space cone space 1 over denominator Curved space surface space area space of space cone space 2 end fraction equals πrl subscript 1 over πrl subscript 2 equals straight l subscript 1 over straight l subscript 2 equals 5 over 8
Answered by Renu Varma | 31 Jan, 2022, 12:12: PM
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