Find the curved surface area of a cone with base radius 5.25 cm and slant height 10 cm.
Radius of base of cone (r)=5.25 cm
and, slant height (l)=10 cm
∴ Curved surface area =πrl
=227×5.25×10
=227×52.5
=22×7.5
=165.0
=165 cm2
The curved surface area of right circular cone whose slant height is 10 cm and base radius is 7 cm
The curved surface area of a cone is 440 sq. cm and slant height is 10 cm. Find the radius of the cone.