86 1. (Volumes of Solids with Known Cross-Sections). Sketch the solid bounded by the surfaces 1²+² = 49, y² + z² = 49 and find its volume. Hint: the surface 2² +2²= 49 is a right circular cylinder. it is formed of straight lines perpendicular to the rz-plane coming through points of the circle [r² +2²= 49, y=0 in the plane Orz; the surface y² + ² = 49 is likewise a right circular cylinder. Think what axis (either the r-, or the y-, or the z-axis) is best suitable to handle the problem. Please give a complete solution to the problem.
Unitary Method
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The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
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