Answer:
1.504×10⁶ ft·lb
Step-by-step explanation:
We understand the top of the oil in the tank is 12 ft below ground level, and the bottom of the tank is 8+18=26 ft below ground level. Then the average depth of the oil is (12+26)/2 = 19 ft below ground level.
The height of the oil in the tank is 26-12=14 ft, so the volume of it is ...
V = πr²h = π(6 ft)²(14 ft) = 504π ft³ ≈ 1583.36 ft³
__
So, the work required to raise that volume of oil to the surface is ...
(1538.36 ft³)(50 lb/ft³)(19 ft) = 1.504×10⁶ ft·lb
Answer:
2
Step-by-step explanation:
8x-1 = x+13
7x = 14
x = 2
Answer:
for the first one y=2 if x=0 and for the second one I dont know
Step-by-step explanation:
Answer:
7
Step-by-step explanation:
h=hat
t= t-shirt
60-21=$39
39=3h
39/3=13 per one hat
21=3t
21/3=7= 7$ per one shirt