Let r be the shaded region in the first quadrant enclosed by the y-axis and the graphs of y=sinx and y=cosx.

a) find the area of r
b)find the volume of the solid generated when r is revolved about the x-axis
c)find the volume of the solid whose base is r and whose cross sections cut by planes perpendicular to the x-axis are squares

Martin likes to make flower bouquets that have 3 daffodils and 4 tulips per vase. a daffodil has a mass of d grams, a tulip has a mass of t grams, and the vase has a mass of u grams. the expression 5(3d + 4t + v) describes the mass of 5 bouquets. match each amount in the situation with the expression that represents it. situation expression number of bouquets mass of one bouquet mass of the tulips in one bouquet 4t mass of the daffodils in one bouquet 3d + 4t + v

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