A$4.$

Suppose a trapezoidal dam has height $40$ feet, top width of $75$ feet and bottom width of $45$ feet. Water is pressed against the entire surface of the dam. Write down an integral which computes the force exerted against this dam. Include units on each factor of your integral.

$($Handy hint: The pressure of water at depth $h$ feet is $62\mathrm{.}4$ h pounds per square foot.$)$A$4.$

Suppose a trapezoidal dam has height $40$ feet, top width of $75$ feet and bottom width of $45$ feet. Water is pressed against the entire surface of the dam. Write down an integral which computes the force exerted against this dam. Include units on each factor of your integral.

$($Handy hint: The pressure of water at depth $h$ feet is $62\mathrm{.}4$ h pounds per square foot.$)$