Question

come of radius 3cm and height 4cm is equal to cylinder of diameter 4cm. Find ratio of their curved surface areas​

Answer 1

Answer:

Solution

r=3 cm and h=4 cm

Let l be the slant height of the cone. Then, l ^2  =r^  2  +h^ 2

l ^2=3  ^2 +4^2

 l=5 cm

Therefore,

Area of the curved surface = πrl=  

7/22 ×3×5=47.14 cm^2

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