Answer:

Step-by-step explanation:
The total surface area of a cone is given by :

Put r = 2r and l = 2l in the above formula

Hence, the total surface area of the cone is
.
B is the answer because none of the others will be right and b is the one you should always do when to solve a rea word problem
Answer:
The answer most probably is 13.
Step-by-step explanation: