1. Activities
Rectangle puzzle: 1 per pair

2. Apply formulas for perimeter, area and circumference
LT 1.5
Apply formulas for perimeter, area and circumference

3. Math Humor
Q: What is the hidden math term? RO OT

4. Math Humor
Q: What is the hidden math term? A: Square Root RO OT

7. Example 1 Perimeter = 6x + 10 Area = .5(6)(x + 4) 3x + 2
Find the perimeter and area of the triangle.
Perimeter = 6x + 10
Area = .5(6)(x + 4)
3x + 2

8. Example 2

9. Example 3
Find the amount of fabric used to make four rectangles. Each rectangle has a length of in. and a width of in.

10. Example 3

13. Most missed formulas!!
We will no longer use 3.14 for pi unless they tell us to. Using 3.14 will not give us an exact answer because it is rounded. Instead, we will use the pi button on the calculator.

14. Example 4
Find the circumference and area of a circle with radius 14m.

15. Example 5
Find the area of a circle when the circumference is 16π.

16. Find the perimeter: x 3x x
x + 5