Which one of the following involves the most efficient use of natural resources? a. A city with one bus company.
b. The same city with two bus companies providing service to the same neighborhoods.

(10 points) 1. cone 2. rectangle 3. triangle 4. circle 5. cylinder a. perpendicular cross section of a pyramid b. perpendicular cross section of a cylinder c. parallel cross section of a sphere d. shape created when a rectangle is rotated about the y-axis e. shape created when a right triangle is rotated about the y-axis