The answer should be 32.25
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
.
(-x-2) (x-4) are the factor of this equation
5+5=10 - Children
5+3=8 - Adult
8+8=16
10+16-26
The answer is D
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