

Area and Surface Area
Presentation
•
Mathematics
•
6th - 8th Grade
•
Practice Problem
•
Medium
Standards-aligned
Tracie Scotti
Used 142+ times
FREE Resource
6 Slides • 9 Questions
1
Area and Surface Area

2
Area
The number of square units needed to cover the surface of a closed figure
Area of a rectangle: A = lw
Expressed as units squared
3
Find the area of a rectangle
4
Multiple Choice
Find the Area of the Rectangle.
160 feet
160 feet squared
5
Surface Area of a Rectangular Prism
The total area of all 6 faces
SA = 2lw + 2lh + 2wh
Expressed in units squared
6
Let's look at its Net
A rectangular prism has 6 faces
Each face has a "twin"
2 pink and 2 blue and 2 orange
2lw + 2lh + 2wh
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Find the surface area of the rectangular prism
1. Label diagram
2. Write correct formula
3. Substitute
4. Solve
5. Unit of measure
8
Multiple Choice
Step 1: Label length, width, and height. What is the height of this figure?
6 in.
12 in.
15 in.
9
Multiple Choice
Step 2: Choose the correct formula. Which formula should we use to calculate the surface area?
A = lw
SA = 2lw + 2lh + 2wh
10
Multiple Choice
Step 3: Substitute in your information. Which is correct?
SA = 2x12x15 + 2x12x6 + 2x15x6
SA = 2x12x15 - 2x12x6 - 2x15x6
11
Multiple Choice
Step4: Use order of operations to solve properly. Which is the correct order? SA = 2x12x15 + 2x12x6 + 2x15x6
Add then Multiply
Multiply then Add
Solve the whole thing from left to right
Order does not matter
12
Multiple Choice
SA = 2x12x15 + 2x12x6 + 2x15x6 Which could this simplify to?
360 + 144 + 180
21215 + 1126 + 2156
29 + 20 + 23
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Multiple Choice
Step 5: Use the correct unit of measure. Which is the final answer?
684 units
684 units squared
14
Multiple Choice
Area describes...
The number of square units needed to cover the surface of a closed figure
The total area of all 6 faces
15
Multiple Choice
Surface Area describes...
The number of square units needed to cover the surface of a closed figure
The total area of all 6 faces
Area and Surface Area

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