Question

write the formula to find the total surface area of the come whose radius is r, units and slant height is l ,units ​

Answer 1

To find the total surface area of a cone, you need to add the are of the conical portion and the base circle.

Area of conical portion with slant height ‘l’ = πrl

Area of the base circle = πr. r

Therefore, total surface area of cone = πr.r + πrl

=> πr(r+l) units

Answer 2

Answer:

The answer is pi r (r+l)_...........................