A water storage tank is built in the shape of a cylinder with a capacity of 40,000 ft3. The cleaning costs in dollars are expressed with the following equation: C =4TTH+Tr2, %3D In the above equation is the radius of the tank (in feet) and h is the height of the tank (in feet).

Calculus: Early Transcendentals
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ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
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Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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A water storage tank is built in the shape of a cylinder with a capacity of 40,000 ft3. The cleaning costs
in dollars are expressed with the following equation:
C =4Trh+Tp2,
In the above equation
is the radius of the tank (in feet) and
h
is the height of the tank (in feet).
The volume of the tank is constrained to 40,000 ft3. Expressed mathematically, this means
V = Tr2h
, So
40000= Tr2h
This question has multiple parts:
1. Determine the radius of the storage tank that minimizes the cleaning cost
C
You may assume that the radius of the storage tank will be between 10 to 50 feet.
2. What are the minimum cleaning costs?
Be sure to use calculus when you are solving this optimization problem!
Transcribed Image Text:A water storage tank is built in the shape of a cylinder with a capacity of 40,000 ft3. The cleaning costs in dollars are expressed with the following equation: C =4Trh+Tp2, In the above equation is the radius of the tank (in feet) and h is the height of the tank (in feet). The volume of the tank is constrained to 40,000 ft3. Expressed mathematically, this means V = Tr2h , So 40000= Tr2h This question has multiple parts: 1. Determine the radius of the storage tank that minimizes the cleaning cost C You may assume that the radius of the storage tank will be between 10 to 50 feet. 2. What are the minimum cleaning costs? Be sure to use calculus when you are solving this optimization problem!
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