AB: required BC: required
MB: required ON: recommended
Teacher Resource 6.2 Unit 13 Measurement pp. P-13–17
New Canadian Edition
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ME6-10
Area of Shapes Made from Rectangles
Students will:
• find the area of shapes composed of rectangles.
AP Book 6.2 pp. 102–103
Draw the line that divides these composite shapes into two rectangles.
See p. P-13 for details.
Exercises:
Divide each shape into two rectangles.
Multiply to find the area of each rectangle. Then add to find the area of the shape.
a)
b)
Hint: Part a) has two different solutions. Can you find both?
a)
b)
Exercises:
Find the area of the shape by adding the areas of the rectangles.
Hint: Is 7 cm the length of the short side (in red) of the shaded rectangle? Or of the unshaded rectangle (in green)?
What is the area of the total shape?
See p. P-14 for details.
What are the dimensions of this shape?
Identify the dimensions of the shape. Then use addition to find its area.
See p. P-14 for details.
Hint: What is the length of the longer side of the shaded rectangle?
a)
b)
Exercises:
Find the area of the shape.
b)
a)
Exercises: (If more practice is needed)
Find the area of the shape.
I want to find the perimeter of this shape.
How can I be sure not to miss any sides?
See p. P-15 for details.
Hint: Do I need to break it into rectangles?
b)
Exercises:
Find the perimeter of these shapes.
Hint: They are from the previous exercises.
a)
Find the side lengths and perimeter of this shape.
Hint: Each square on the grid is 5 cm by 5 cm.
See p. P-16 for details.
Split the shape into rectangles and find the area.