Sketch the region bounded by the following surfaces. each pair of the surfaces intersects in a curve. be sure to include these curves in your sketch. then use a triple integral to calculate the volume of the solid. (a) z = 10 − x 2 − y 2 , y = x 2 , x = y 2 , z = 0 (b) y + z = 4, y = 4 − x 2 , y = 0, z = 0.