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1. What is the area, in square inches, of the wooden boárd after the triangular piece was removed? 28 ft 12 ft. -4 ft+

1. What is the area, in square inches, of the wooden boárd after the triangular piece was removed? 28 ft 12 ft. -4 ft+

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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28 ft 1. What is the area, in square inches, of the wooden boárd after the triangular piece was removed? 12 ft. 192ing 4 ft
Transcribed Image Text:28 ft 1. What is the area, in square inches, of the wooden boárd after the triangular piece was removed? 12 ft. 192ing 4 ft
Expert Solution
Step 1

We know 1 foot = 12 inches

So, 28 feet = 28×12 inches= 336 inches

And 12 feet = 12×12 inches = 144 inches.

So, the rectangular part has a length of 336 inches and a wide of 144 inches.

Then the area of the whole rectangular part is = length × wide   square inches.

 = 336×144 square inches

= 48384 square inches.

Now, 4 feet = 4×12 inches = 48 inches

So, the triangular part has a base of 48 inches and a height of 144 inches.

Then the area of the triangular part is

12×base×height square inches 

= 12×48×144 square inches

= 3456 square inches.

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