The Basics of Area
Find the Unknown Side
Using Arrays to Find Area
Find the Area
100
What is the formula for Area?
Area = Length X Width
OR
Area = Width X Length
100
What equation does Ms. Stauffer want us to write down FIRST to help us figure out the side lengths and area?
____ X ____ = _____
100
Find the Area of Rectangle B:
15 square units. (3 x 5 = 15)
100
Find the Area:
2 x 8 = 16
200
What does the "W" and the "L" stand for in the Formula: A = W x L?
W= Width
L = Length
200
What is the width of the shaded rectangle?
4 ft.
200
Write and solve and equation to find the Area of Rectangle A:
5 x 6 = 30 square units
200
Find the area:
27 square inches
300
Does the "3 cm" represent the length or the width of the rectangle?
Width
300
Find the length of the rectangle:
3 square units
300
Write and solve and equation to find the area for the shaded rectangle:
8 x 4 = 32 square units
300
Find the area of Rectangle A:
36 square units (6 x 6 = 36)
400
Why can't I multiply 3m and 10m to get the area of the entire figure? 
Because the figure is not a rectangle. The formula Area = Length X width is only for rectangles and squares. So, you need to figure out the area of each rectangle first and then add them all up to find the area of the entire figure.
400
Ms. Stauffer glues 3 identical pieces of paper together to form the square below. Find the missing width for the 1 piece of paper. 
3 cm. (The total width of the 3 identical pieces of paper together = 9 so 9 divided by 3 pieces of paper = 3).
400
Find the Area of Rectangle A
7 x 4 = 28 square units
400
Find the area of the shaded figure:
Area of shaded figure is: 28 cm.
Area of Big Rectangle: 6 x 6 = 36
Area of Small Rectangle: 4 x 2 = 8
36 - 8 = 28.
500
What is Area?
Area is the amount of space inside of a figure.
500
What are the unknown side lengths of the unshaded rectangle below?
the length is 5 cm and the width is 4 cm.
500
Use the arrays below to find the pattern. Write and solve an equation to find the area of the array that would come next in the pattern. Draw a picture of it.
1st array: 2 x 2 = 4
2nd array: 3 x 3 = 9
3rd array: 4 x 4 = 16
The array that would come next would be: 5x5 = 25. There would be 5 columns with 5 square units in each row.
500
Find the area of the shaded figure:
52 square units
8 x 4 = 32
5 x 4 = 20
32 + 20 = 52 square units