Question

Radius of aSlant heightOf a circular cone are in ratio 3:5 if the curved surface area is 60 pie cm square then find its radius and slant height

Answer 1

The radius of cone is 6 cm and slant height is 10 cm

Step-by-step explanation:

The ratio of radius to slant height of a circular cone is 3:5

Radius, r = 3x

Slant height, l = 5x

Curved surface area of cone $=\pi rl$

                                       $60\pi=\pi\times 3x\times 5x$

                                       $x^2=4$

                                          $x=2$

Radius, r = 3*2 = 6 cm

Slant height, l = 5*2=10 cm

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