7.5


 * Surface Area and Volume of Cones

Cone:** a three-dimentsional figure that consists of a circular base and a curved lateral surface that connects the base to a single point not in the plane of the base.


 * Right cone:** The altitude of a cone intersects the base of the cone at its center.


 * Oblique cone:** The altitude of a cone does not intersect the base of the cone at its center.

S = (pi)rl + (pi)r²
 * Surface area of a right cone:** S = L + B

V = 1/3 (pi)r²h ==
 * Volume of a cone:** V = 1/3 Bh