Answer: 219 I beleive
Step-by-step explanation: 54(4)+(.750)4=219
Pairs, in this case, relates to a group of 2 or more. We have 6 friends. Let's call them A,B,C,D,E,F. This will allow us to make a [some sort of] combination tree:
1. ABC against DEF
2. ABD against CEF
3. ABE against CDF
4. ABF against CDE
5. ACD against BFE
6. ACE against BDF
7. ACF against BDE
8. ADE against BCF
9. ADF against BCE
10. AEF against BCD
I believe there are 12 combinations... I just can't think of the last 2 though.
$11 per hour. Divide 82.5 by 7.5 and you get how much money she earns in an hour (11 dollars)
Diameter = 7 cm
radius = 7÷2 = 3.5
Volume of cone = 1/3

Volume of cone = 1/3

= 115 cubic inches (Answer B)