
Concept explainers
a.
To find:the function that gives the area of the circular leak in terms of the time.
a.

Answer to Problem 86E
The value of function that gives the area of the circular leak in terms of time is
Explanation of Solution
Given information :
The functions are
Calculation : since the area of a circle is
Thus, The value of function that gives the area of the circular leak in terms of time is
b.
To find: the size of the contaminated area.
b.

Answer to Problem 86E
The size of the contaminated area is
Explanation of Solution
Given information :
The function is
Calculation : to find size of the contaminated area after
since area is
Thus, The size of the contaminated area is
c.
To find: the time when size is
c.

Answer to Problem 86E
The time is
Explanation of Solution
Given information :
The function is
Calculation : to find the time substitute
The value of function
Thus, The time is
Chapter 1 Solutions
Precalculus with Limits: A Graphing Approach
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