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Find the mass of the lamina described by the inequalities x 20 and 7<y 37+V 49-x, given that its density is p(x, y) = 6xy. (Hìnt: Some of
the integrals are simpler in polar coordinates.)
O 26.411
4
8
79,233
4
26,411
O 31,213
79,233
8

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