# Science:Math Exam Resources/Courses/MATH101/April 2005/Question 05 (a)

MATH101 April 2005
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### Question 05 (a)

A water tank with depth 3 feet is in the shape of the trough depicted below. The bottom edge of the tank is 1 foot above the ground, and the ends of the tank are equilateral triangles of side length ${\displaystyle 2{\sqrt {3}}}$ feet; the top of the tank is a rectangle of length 12 feet and width ${\displaystyle 2{\sqrt {3}}}$ feet.

(a) The tank is filled with water pumped up from the ground level. How much work is done in filling the tank? Express your answer in foot-pounds, and use the value 62 lb/ft${\displaystyle ^{3}}$ for the density of water. (Note that in the Imperial System, pounds are a unit for force.)