find the height of a right circular cylinder whose surface area is 8.25 pi square inches and radius 1.5 inches
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A=2pir^2+2pirh
96.3pi=2pi(r^2+11.7r)
48.15=r^2+11.7r
100r^2+1170r-4815=0
96.3pi=2pi(r^2+11.7r)
48.15=r^2+11.7r
100r^2+1170r-4815=0
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