Q. 144.3( 4 Votes )

# The diameters of two cones are equal. If their slant heights are in the ratio 5 : 4, find the ratio of their curved surfaces.

Answer :

We have,

*r _{1}* =

*r*

_{2}*l _{1}* :

*l*

_{2}= 5 : 4

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