G4 L13-6 Solve Perimeter and Area Problems (1)
Presentation
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Mathematics
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4th Grade
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Practice Problem
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Medium
Noha Barada
Used 7+ times
FREE Resource
6 Slides • 9 Questions
1
Lesson 13-6
Solve Perimeter & Area Problems
Lesson Objective
• Find the unknown length or width of a rectangle using the known area or perimeter.
Essential Question
How can you use perimeter and area to solve problems?
2
Open Ended
What are the length and width of your book?
3
Open Ended
What would you find if you add them then multiply the sum by 2?
4
Open Ended
What would you find if you multiply the height by the width?
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https://www.youtube.com/watch?v=rSVMrPu0__U
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Perimeter Vs Area
The perimeter of a figure is the distance around the figure.
To find the perimeter of a rectangle, use the formula
P = 2l + 2w or 2(l + w)
The area of a figure is the number of square units needed to cover the figure.
To find the area of a rectangle, use the formula A = l x w
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Multiple Choice
A rectangular birthday cake (shown above) measures 8 inches by 12 inches. What is the perimeter of the cake?
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Multiple Choice
A rectangular birthday cake (shown above) measures 8 inches by 12 inches. What is the area of the cake?
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Fill in the Blanks
Challenging Question - A rectangle has a width of 14 cm & a perimeter equal to 80 cm. What is its height?
Type answer...
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https://www.youtube.com/watch?v=UyLTqfbhicw
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Fill in the Blanks
Challenging Question - A rectangle has a width of 9 feet and an area equal to 36 ft2. What is the measure of the missing length?
Type answer...
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https://www.youtube.com/watch?v=Z4zzMCAAoxU&t=16s
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How can you use perimeter and area to solve problems?
The formulas for perimeter & area of rectangle can be applied to determine the length or the width of a rectangle when given the area & one side or the perimeter & one side.
14
Open Ended
A rectangle has a perimeter of 36cm. What could the area of this shape be?
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Open Ended
TODAY’S LESSON TWEET
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What did you find challenging?
Lesson 13-6
Solve Perimeter & Area Problems
Lesson Objective
• Find the unknown length or width of a rectangle using the known area or perimeter.
Essential Question
How can you use perimeter and area to solve problems?
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