MATH 141 Midterm: MATH141 PILACHOWSKI-T SPRING2007 0101 MID SOL
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Math 141 test 1: (15 points) let r be the region between the graph of (6. 1 6. 8) xf. Find the volume v of the solid obtained by rotating r about the x-axis. (you must show integral-calculus work and state a numeric answer in simplest form to receive full credit. ) radius of circular cross-section = f, so r. )122: a. (15 points) the base of a solid s is a circle with equation x. Write the integral you"d need to find the volume of s. do not evaluate. domain of x = [ 3, 3]; circle (base) is on both sides of x-axis so side of square (cross-section) = 2y = 2 x dx b. (4 extra points) the base of a solid t is a circle with equation x. The cross-sections are isosceles right triangles with one of the legs on the base. How would t"s volume be related to the volume of s found in question 2. a.