1. Warm Up:
Find the circumference of the circle. Round to nearest hundredth
1. r = 3.4 m d = 9 cm
Find the area of the figures.
3. Circle with diameter = 6 cm
4. Triangle with base = 4 in
and height = 5 in
21.35 m
28.26 cm
28.26 cm2
10 in2

2. Lesson 4.3: Area
I can:
Find the area of a circle, triangle, square, and quadrilaterals using their formulas.
Vocabulary:
Length
Width

3. Area of a Square

4. Find the Area
You are given the side length of 4. 4

5. Find the Area 6 2

6. Length
A dimension of a figure, usually the longer one, that is measured from end to end.
Length

7. Width
A dimension of a figure, usually the shorter one, that is measured from side to side.
Width

8. Area of a Rectangle
Width
Length

9. Find the Area 7 12

10. Find the Area 15
2.4 3
8.3

11. Area of a Parallelogram
height
base

12. Find the Area 5 8

13. Find the Area 5 9 15 6 4 1 2 12

14. Area of a Rhombus
height
base

15. Find the Area
5.2 6

16. Find the Area
3.1 ft
7.4 m
4 ft
8 m
13.7 km
15 km

17. Area of a Trapezoid b1 h b2

18. Find the Area 3 3 4

19. Find the Area 2 4 1 4 5 3