For a right circular cone, if the radius is reduced to 1/5 its original size and the slant height is reduced to 1/6 its original size

For a right circular cone, if the radius is reduced to 1/5 its original size and the slant height is reduced to 1/6 its original size.

which is the surface area if the original radius is 8 centimeters and the original slant height is 13 centimeters