Find the curved surface area of a right circular cone, whose slant height is 25cm and the radius of the base is 7cm.
Curved surface area of a right circular cone of height 'h', radius 'r' and slant height 'l' is given by πrl
For r=7cm, l=25cm
∴ Curved Surface area=πrl
=π×7×25
=227×7×25
=22×25
=550m2