Ineed a genius to me !
find the surface area of the cone(s? )
give your answer like "6π" so ignore the π
and write steps too
and the answer is not 720"
question worth 15 pointa

There are 2 cones in the picture that are joined together at their base.

The radius (r) of the cone = 10 ft

The height (h) of the cone = 24 ft

Thus, the slant height (l) of the cone =  =  = 26 ft

Now, we have all the values, we can calculate the area.

The surface area of a cone including the base = 

But since we only need the area without the base so the surface area =  =  = 

That is the area of one cone without the base area.

The area of both the cones =