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Find Perimeter, Circumference, and Area

Find Perimeter, Circumference, and Area. Ch 1.7. Formulas. What is perimeter?. The distance around a shape or figure. What is area?. The amount of space inside of a flat shape. What is circumference?. The perimeter around a circle. How do you know when to use a specific formula?.

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Find Perimeter, Circumference, and Area

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  1. Find Perimeter, Circumference, and Area Ch 1.7

  2. Formulas

  3. What is perimeter? • The distance around a shape or figure.

  4. What is area? • The amount of space inside of a flat shape

  5. What is circumference? • The perimeter around a circle

  6. How do you know when to use a specific formula?

  7. Find the perimeter and area.

  8. Page 38 • #3, 4, 10, 11

  9. Page 34 • 5 13 m 5 m 4 m 3 m x m

  10. Circumference and Area 3.1 m

  11. Circumference and Area 12 m

  12. Page 38 • 7 - 9

  13. Finding area when given perimeter • Some problems will give you the area and ask you to find the perimeter or vice versa. • You will use both the area and perimeter formulas to solve.

  14. The area of a square is 49, what is its’ perimeter? • A = s²

  15. The perimeter of a rectangle is 42. You know that the length is twice the width. What is the area of the rectangle?

  16. The area of a rectangle is 192. You know that the length is 3 times the width. What is the perimeter of the rectangle?

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