Question: In 19-28, represent the volume of each solid as a definite integral, then evaluate the integral. 19) The base of a solid is the region

In 19-28, represent the volume of each solid as a definite integral, then evaluate the integral.

19) The base of a solid is the region between one arch of the curve y = sin(x) and the x-axis, and crosssections ("slices") of the solid perpendicular to the base (and to the x-axis) are squares.

21) The base of a solid is the region in the first quadrant bounded by the x-axis, the y-axis and the curve y = cos(x), and slices perpendicular to the base (and to the x-axis) are semicircles.

can you please do in the paper with a pen or pencil. Very much appreciated :)

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