Answer:
7 girls can go in the first place, 6 in the second, etc.
7! ways is the number of ways to arrange the girls.
likewise the boys can be arranged in 7! ways
The total number of ways becomes 7! * 7!
7! * 7! = 25,401 600 ways
A=2πrh+2πr2=2·π·6·25+2·π·6^2 so the answer is D
I only know the y intercept which is 0,3
