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Chapter 1: Draw a DiagramPowerPoint Presentation

Chapter 1: Draw a Diagram

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Chapter 1: Draw a Diagram.

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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. 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?

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. 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?

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 . . . 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?

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 . . . 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?

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 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?

- 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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