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What is the surface area of a cylinder with holes in the side? Invaders of the european continent are? If the pattern of a distance time graph is in straight line what is the type of motion? What is the normality of an acid if 21.18 mL were needed to titrate 0.1369 g Na2CO3? For what values of k is the following integral improper? upper bound is k, lower bound is 0. (x)/(x^2-19x+90)dx?