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11. A water tank is to be constructed with a square base and open top, and is to hold 64 cuble yards. If the cost of the sides is 81 a square yard, and of the bottom $2 a square yarıl, what are the dimensions when the cost is a minlmum ? What is the minimum cost? Ans. Side of base = 4 yd., height = 4 yd., cost $06. %3D

11. A water tank is to be constructed with a square base and open top, and is to hold 64 cuble yards. If the cost of the sides is 81 a square yard, and of the bottom $2 a square yarıl, what are the dimensions when the cost is a minlmum ? What is the minimum cost? Ans. Side of base = 4 yd., height = 4 yd., cost $06. %3D

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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A water tank is to be constructed with a square base and open top, and is to hold 64 cubic yards. If the cost of the sides is $1 a square yard, and of the bottom $2 a square yard, what are the dimensions when the cost is a minimum? What is the minimum cost?
11. A water tank is to be constructed with a square base and open top, and is to hold 64 cuble yards. If the cost of the sides is 81 a square yard, and of the bottom $2 a square yarl, what are the dimensions when the cost is a minlmum ? What is Ans. Side of base = 4 yd., height = 4 yd., cost $08. the minimum cost ? heuglht fon the of louiua ont o
Transcribed Image Text:11. A water tank is to be constructed with a square base and open top, and is to hold 64 cuble yards. If the cost of the sides is 81 a square yard, and of the bottom $2 a square yarl, what are the dimensions when the cost is a minlmum ? What is Ans. Side of base = 4 yd., height = 4 yd., cost $08. the minimum cost ? heuglht fon the of louiua ont o
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