Answer:
6082.70
Step-by-step explanation
15300 × .8575 × 8575 × .8575 × .8575 × .8575 × .8575 = 6082.69727735
6082.69727735 rounds to 6082.70
Lateral Surface Area = 4s^2
LSA = 4*4^2
LSA = 64 cm^2
Total Surface Area = 6s^2
TSA = 6*4^2
TSA = 96 cm^2
If "4/2/7" is all we have to work with, then PEMDAS rules will save the day. Do the division from left to right.
4/2 becomes 2. Then we have 2/7, a proper fraction. I don't see where an improper fraction would come from in this case.
Exact form: (8.3+6.3)^2-66.138
Decimal Form: 147.022
I don't really think that this is the answer to what you're looking for but I do think you made an error on your question.