M Wed May 25 ... 99% webassign.net A pencil cup with a capacity of 33 in.3 is to be constructed in the shape of a right circular cylinder with an open top. If the material for the sides costs 29¢/in.2 and the material for the base costs 46¢/in.2, what should the radius of the base of the cup be to minimize the construction cost (in )? Letr and h (in in.) be the radius and height of the pencil cup, respectively. r = in. (Round your answer to two decimal places, if necessary.) Complete the following parts. (a) Give a function f in the variable r for the quantity to be optimized. 1914 f(r) = 46-2 + cents (b) State the domain of this function. (Enter your answer using interval notation.) (c) Give the formula for h in terms of r. 33 h = T (d) To determine the optimal value of the function f, we need the critical numbers of f (e) These critical numbers are as follows. (Round your answer(s) to two decimal places, if necessary. If a critical number is an endpoint of the domain, do NOT include it in your answer. Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) r = 1.877
M Wed May 25 ... 99% webassign.net A pencil cup with a capacity of 33 in.3 is to be constructed in the shape of a right circular cylinder with an open top. If the material for the sides costs 29¢/in.2 and the material for the base costs 46¢/in.2, what should the radius of the base of the cup be to minimize the construction cost (in )? Letr and h (in in.) be the radius and height of the pencil cup, respectively. r = in. (Round your answer to two decimal places, if necessary.) Complete the following parts. (a) Give a function f in the variable r for the quantity to be optimized. 1914 f(r) = 46-2 + cents (b) State the domain of this function. (Enter your answer using interval notation.) (c) Give the formula for h in terms of r. 33 h = T (d) To determine the optimal value of the function f, we need the critical numbers of f (e) These critical numbers are as follows. (Round your answer(s) to two decimal places, if necessary. If a critical number is an endpoint of the domain, do NOT include it in your answer. Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) r = 1.877
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter9: Surfaces And Solids
Section9.4: Polyhedrons And Spheres
Problem 23E: The surface of a soccer ball is composed of 12 regular pentagons and 20 regular hexagons. With each...
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