What is the unit?
Regular Shapes
Composite Figures
EXAMPLE
100
If this is our shape and we are finding its area, what would our unit be in our answer?
What is In2 or inches squared?
100
What is the area of this shape?
What is 10 in2?
100
What is the area of this composite/irregular shape?
What is 36cm2?
100
EXAMPLE:
What is the area of this square?
What is 4 ft2?
200
If the area of Square A is 20 in2 and the area of Square B is 20 cm2, which square has a bigger area?
In other terms, which square has the greater area?
Square A because an inch is bigger or greater than a centimeter.
200
Count the units... what is the area of this shape?
What is 18 units2?
200
Ms. Jackson's desk is 4 feet wide and 7 feet long. She has 3 drawers in her desk. Each drawer is 2 feet long and 3 feet wide.
What is the area of each drawer? If you add these areas together, what is your total area of the drawers?
Each desk has an area of 6 ft2.
The 3 drawers' areas added together equals 18 ft2.
300
If this is our shape and we are finding the area, what would our unit be in our answer?
What is units2 or units squared?
300
The area of this shape is 18 units2. What is the length and the width of this shape?
The length of this shape is 3 inches.
The width of this shape is 6 inches.
300
Ms. Sullivan's dresser at home has an area of 36 in2. The width of her dresser is 9 inches. She has three drawers in her dresser, each with an area of 12 in2. The length of her dresser is 4 inches.
What is the LENGTH of her entire dresser?
What is the WIDTH of the drawers?
Length of the dresser --> 4 inches
Width of the drawers --> 3 inches
400
TRUE or FALSE: These two shapes are the same size...
FALSE - The first rectangle has inches as its unit while the second rectangle has centimeters as its unit. In this case, the first rectangle is bigger because inches are greater/bigger than centimeters.
So they are NOT the same size.
400
What is the area of the shaded square?
What is 9 units2?
400
The area of the entire figure is 72 in2. The length of the bottom rectangle is 6 inches and the width is 9 inches. The length of the top rectangle is 3 inches. However, we do not know the width of the top rectangle...
So what is the width of the top rectangle?
The missing width is 6 inches.