To determine The way to cross the 10 f t wide moat using only two 9 1 2 − f o o t plank without using glue, nail, or supernatural means. Explanation Given: The given diagram is as below: Calculation: Let’s make the diagram which explains the way to cross the Moat as below: This diagram can be further re-drawn into a new diagram as below: As we can see here in the above diagram, using Pythagoras theorem: A B = A F 2 + B F 2 A B = E F = 10 2 + 10 2 = 10 2 A B = E F = 10 2 > 9 1 2 So we need to place one of the plank along CD such that C D ≤ 9 1 2 f t As we can see from the triangle ECD, EC=ED, using Pythagoras theorem 2 E D = 9 1 2 E D = 19 2 2 As we can see AFBE is a square and CED is a isosceles triangle

Using & Understanding Mathematics: A Quantitative Reasoning Approach (7th Edition)

7th Edition

ISBN: 9780134705187

Author: Jeffrey O. Bennett, William L. Briggs

Publisher: PEARSON

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Chapter 2.C, Problem 16E

To determine

The way to cross the 10 ft wide moat using only two 912−foot plank without using glue, nail, or supernatural means.

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Chapter 2.C, Problem 15E

Chapter 2.C, Problem 17E

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Chapter 2 Solutions

Using & Understanding Mathematics: A Quantitative Reasoning Approach (7th Edition)

Ch. 2.A - To end up with units of speed, you need to a....Ch. 2.A - What does the word per mean? divided by multiplied...Ch. 2.A - Which of the following represents 4 square miles?...Ch. 2.A - Thu arc given two pieces of information: (1) the...Ch. 2.A - Which of the following represents 9 square miles?...Ch. 2.A - If you multiply an area in square feet by a height...Ch. 2.A - There are 1760 yards in a mile. Therefore, one...Ch. 2.A - One square foot is equivalent to 12 square inches...Ch. 2.A - You buy apples while traveling in Europe. The...Ch. 2.A - If the current exchange rate is $1.058 per euro,...

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