
Area of composite shapes
Presentation
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
Standards-aligned
Imad Aoudi
Used 640+ times
FREE Resource
13 Slides • 1 Question
1
L9.3: Area of composite shapes
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3
Learning objectives
find the areas of composite figures where two or more shapes have been composed together,
find the areas of composite figures where one or more shape is taken out of another shape.
4
Lesson prerequisites
finding areas of 2D shapes:
squares,
rectangles,
parallelograms,
triangles,
trapezoids,
circles.
Note The unit of measurement of any area is always unit2
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6
Area of shapes
A= π*r2
A= s*s
A= s2
A= L*W
A= 1/2 b*h
s
s
b
h
L
w
r
8
Multiple Choice
What operation do you do when you remove a shape ?
Cut off so subtract area
(Subtraction)
Add on more area( Addition)
Nothing
Divide the area by the factor (divison)
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10
Elite
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Proffesional
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Standard
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Homework
Using A4 paper,
Create a custom composite shape of combining two shapes minimum,
Measure the area using a ruler and determine the area
Materials needed:
-Paper (or cardboard)
-Ruler
- Pencil
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L9.3: Area of composite shapes
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