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OpenStudy (anonymous):
the base of a solid is the region between the curve y=3cosx and the x-axis from x=0 to x=pi/2. The cross sections perpendicular to the x-axis are squares with diagonals running from x-axis to the curve. Find the volume.
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OpenStudy (anonymous):
Figrure out what the region look like. Draw a rough of the cosine function from 0 to pi/2
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