<PRE><B>Question 1139324</B>
A community skating rink is in the shape of a rectangle with
semicircles attached at the ends. The length of the rectangle
is 20 feet less than twice the width. The thickness of the ice is
0.75 inch.
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x, the width
2x-20, the length just the rectangular part
V, volume


{{{V=(3/4)(x(2x-20)+pi*(x/2)^2)}}}
Simplify this and then use for answering question (b).</PRE>