Answered: 9. A cone is expanding at the rate of 9…

9. A cone is expanding at the rate of 9 cm/sec, the formula for volume of a cone is: V = let 3 h= 2r, what is when r= 3?

Elementary Geometry for College Students

6th Edition

ISBN:9781285195698

Author:Daniel C. Alexander, Geralyn M. Koeberlein

Publisher:Daniel C. Alexander, Geralyn M. Koeberlein

Chapter9: Surfaces And Solids

Section9.1: Prisms, Area And Volume

Problem 42E: The gasoline tank on an automobile is box-shaped with dimensions of 24 in. by 20 in. by 9 in. If 1...

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Concept explainers

Cylinders

A cylinder is a three-dimensional solid shape with two parallel and congruent circular bases, joined by a curved surface at a fixed distance. A cylinder has an infinite curvilinear surface.

Cones

A cone is a three-dimensional solid shape having a flat base and a pointed edge at the top. The flat base of the cone tapers smoothly to form the pointed edge known as the apex. The flat base of the cone can either be circular or elliptical. A cone is drawn by joining the apex to all points on the base, using segments, lines, or half-lines, provided that the apex and the base both are in different planes.

Question

9. A cone is expanding at the rate of 9 cm/sec, the formula for volume of a cone is: V =
3
let
= 2r, what is
dr-
when r= 3?

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