Thomas' Calculus 13th Edition

Published by Pearson
ISBN 10: 0-32187-896-5
ISBN 13: 978-0-32187-896-0

Chapter 5: Integrals - Practice Exercises - Page 309: 81

Answer

No, see explanations.

Work Step by Step

Step 1. Given a total budget of $10,000$ dollars, with a cost of $2+0.1=2.1$ dollars per square feet, we need to calculate the total area and then the total cost. Step 2. The area can be approximated as the sum of individual sections. Each section can be approximated using a trapezoid (middle point approximation) with a height of $15\ ft$ and the top and bottom width given in the figure of the exercise. Step 3. We have the total area as $A=\frac{15}{2}(0+2(36+54+51+49.5+54+64.4+67.5)+42)=5961\ ft^2$ Step 4. The total cost will be $T=5961\times 2.1=12,518.1\gt 10,000$ which means that the cost is more than the budget. We conclude that the lot can not be built for $10,000$ dollars.
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