The document provides a detailed explanation of the area and perimeter of rectangles, outlining their definitions, characteristics, and formulas for calculation. It illustrates the concepts through examples, including calculating the area and perimeter of specific rectangular shapes. The content is geared towards helping learners differentiate between area and perimeter and apply these concepts in real-life scenarios.

1. Area and
Perimeter of
Rectangles
M E A S U R E M E N T
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2. Quick recall!
Look around you and spot
objects that look like a rectangle.
Do you know how to find their
area and perimeter?
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3. Lesson Outline
• Area of a rectangle on a Grid
• Area vs. Perimeter
• Solving for the Area and Perimeter
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4. • Determine the area of a rectangular
figure on a grid
• Differentiate area and perimeter
• Solve word problems involving area
and perimeter of a rectangle
Learning Outcomes
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5. Rectangle
• Has 4 sides.
• Has 4 right angles.
• Parallel sides have equal
measures.
• The sides of a rectangle are
known as length and width.
L E N G T H
W I D T H
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6. Area on a
Grid
A grid has vertical and horizontal
lines that form a square. Each
square measures 1 sq. unit.
Let's count how many squares
the blue rectangle covers.
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7. Area on a
Grid
There are 35 squares.
This means that the rectangle
has an area of 35 square units.
3 5 S Q U A R E
U N I T S
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8. Area Perimeter
Area vs. Perimeter
A R E A P E R I M E T E R
The amount of space
inside a shape.
The total distance around the
outside of a shape.
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9. Area Perimeter
Area vs. Perimeter
The area is the product of
length and width. Area is
expressed in square units.
The perimeter is twice the sum
of the length and width.
Perimeter is expressed in units.
P E R I M E T E R =
2 ( L E N G T H + W I D T H )
L E N G T H
W
I
D
T
H
L E N G T H
W
I
D
T
H
A R E A =
l e n g t h x w i d t h
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10. Example
1 5 M
1 1 M
Perimeter
Area
Let's find the area and perimeter of this basketball court.
Perimeter = 2 (length + width)
Perimeter = 2 (15 m + 11 m)
Perimeter = 2 (26 m)
Perimeter = 52 m
Area = length × width
Area = 15 m × 11 m
Area = 165 sq. cm
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11. Mid-Discussion
Break
In what real-life situations
do you need to measure
the area of a rectangle?
What tasks require
measuring the perimeter
of a rectangle?
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12. Applying Area and Perimeter
1
The rectangular field shown is
310 ft. long and 250 ft. wide.
What is its area?
2
The window has a length of
160 cm and a width of 80 cm.
What is its perimeter?
Work in pairs in solving the following word problems.
Write your workings and
answer here
Write your workings and
answer here
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13. P = 2(160 cm + 80 cm)
P = 2(240 cm)
P = 480 cm
The window has a perimeter
of 480 cm.
A = 310 ft × 250 ft
A = 77,500 sq. ft
The rectangular field has
an area of 77,500 sq. ft
A N S W E R K E Y
1
The rectangular field shown is
310 ft. long and 250 ft. wide.
What is its area?
2
The window has a length of
160 cm and a width of 80 cm.
What is its perimeter?
Applying Area and Perimeter
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14. Recap
Remember the following
formulas in finding the area
and perimeter of a rectangle.
A = L × W
P = 2 ( L + W )
Area of Rectangle
Perimeter of Rectangle
L E N G T H
W
I
D
T
H
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