Q20 of 32 Page 13

A cone is made from a metal sheet in the form of a sector of a circle. If the radius of the circle is 14 cm and the sector angle is 60°, find the radius of the base, slant height and the height of the cone formed.

Slant height of cone formed = radius of sector(R) = 14 cm

Now, circumference of base of cone = length of arc
∴ 2 × × r =
∴ r =  cm = 2.33 cm (approx.)
       Height of cone(h) = =cm2  
                            = cm2 
                         ∴ h = 13.8 cm2  (approx.)

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