SOLUTION: a cylindrical container tank, lying horizontally, 0.90 m. in diameter and 3m long is filled to a depth of 0.60m. how many gallons of water does it contain if one cubic meter is 265

Question 1178402: a cylindrical container tank, lying horizontally, 0.90 m. in diameter and 3m long is filled to a depth of 0.60m. how many gallons of water does it contain if one cubic meter is 265 gallons.
Answer by htmentor(1343) (Show Source): You can put this solution on YOUR website!
Refer to the drawing of the cross-section of the pipe. The radius, R of the
pipe is 0.9/2. The size of the angle BAC is A = 2*acos(0.15/R), and the area of
the sector subtended by this angle is As = A*R^2/2
If we subtract the area of the triangle ABC from As, this will give us the area
of the empty space
The cross sectional area of the liquid in the pipe will be the total cross
sectional area minus the area of empty space
The area of triangle ABC = At = 0.15*sqrt(0.45^2 - 0.15^2)
Putting in all the numbers we have As = 2.46191*0.45^2/2 = 0.2493 and
At = 0.0636
Thus the area of liquid is pi*0.45^2 - (0.2493 - 0.0636) -> 0.4505
Finally the volume is the area times the length:
V = 0.4506*3 = 1.3516 m^3 = 358.18 gallons

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