Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved surface area.
Radius (r) = 10.5/2 cm = 5.25 cm Slant height (l) = 10 cm Curved surface area of the cone = (πrl) cm2 =(22/7 × 5.25 × 10) cm2 =165 cm2
