What is the surface area of the lateral face of a cone with a radius of 25 feet and a slant height of 40 feet?
2199 ft2
3770 ft2
4085 ft2
3142 ft2
The lateral surface area of a cone can be found using the formula A = πrs, where r is the radius of the base and s is the slant height.
In this case, the radius is given as 25 feet and the slant height is given as 40 feet.
Plugging these values into the formula, we get A = π(25)(40) = 3142 ft2.
Therefore, the surface area of the lateral face of the cone is 3142 ft2.