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## Chapter 1: Draw a Diagram

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**Chapter 1:**Draw a Diagram**Curly used a shovel to dig his own swimming pool. He figured**he needed a pool because digging it was hard work and he could use it to cool off after working on it all day. He also planned to build a rectangular concrete deck around the pool that would be 6 feet wide at all points. The pool is rectangular and measures 14 feet by 40 feet. What is the area of the deck?**Try ideas.**52 feet + 26 feet + 52 feet + 26 feet = 156 feet 156 feet x 6 feet = 936 square feet Counts each corner twice!**Keep drawing diagrams.**Two lengths: 40 ft x 6 ft x 2 = 480 sq ft Two widths: 14 ft x 6 ft x 2 = 168 sq ft Four corners: 6 ft x 6 ft x 4 = 144 sq ft Total 792 sq ft**And another . . .**52 ft x 6 ft = 312 sq ft 312 sq ft x 2 = 624 sq ft for extended lengths 14 ft x 6 ft = 84 sq ft 84 sq ft x 2 = 168 sq ft for widths Total = 624 sq ft + 168 sq ft = 792 sq ft**And another . . .**Area of entire figure = 52 ft x 26 ft = 1352 sq ft Area of pool alone = 40 ft x 14 ft = 560 sq ft Area of deck = 1352 – 560 = 792 sq ft**Strategy: Draw a diagram**• Do not hesitate to draw. • You don’t have to be an artist to draw a useful diagram. • If you can visualize it, draw a diagram!

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