Diameter and slant height of a cone are 14 m and 25 m respectively. Find it total surface area.
Given, the base diameter of cone =14 m
∴ Radius (r)=145=7 m
Slant height (d)=25 m
Total surface area of the cone =πr(1+r)
=227×7×(25+7)
=227×7×32
=22×32
=744 m2
Hence, total surface area of cone 704 m2