The correct answer is D
Hope this helped :)
For this case we have that by definition, the surface area of a cone is given by:

Where:
A: It's the radio
s: It's the slant
Substituting according to the data we have:

If we round:

Answer:
True
Chileeeeeeeeeeeeeeeeeeeeeeeeeee
Answer:
t=21
Step-by-step explanation: