S CRM 3.2 Lesson 4/5

Presentation

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Mathematics

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7th Grade

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Hard

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CCSS

6.G.A.1

Standards-aligned

Emese Conrad

Used 3+ times

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6 Slides • 7 Questions

Area of Semi-Circles and Composite Figures

S CRM 3.2 Lesson 4/5

Area and Circumference of Semi-Circles

Find the area or circumference of a whole circle, then cut it in half!

Area of Polygons

Parallelogram: $A=b\cdot h$
where b=base length, and h=height
Triangle: $A=\frac{1}{2}b\cdot h$ where b=base length and h=height (perpendicular to one another)
Trapezoid: $A=\frac{1}{2}h\left(b_1+b_2\right)$ where $b_1$ and $b_2$ are the two bases and h=height

Composite Figures

A figure that is made up of multiple familiar shapes.

Find the area of the attached composite figure.

Multiple Choice

Find the area:

84 m²

168 m²

112 m²

56 m²

Multiple Choice

Find the area of the trapezoid

36 meters squared

72 meters squared

18 meters squared

Multiple Choice

17 units²

20 units²

10 units²

16 units²

Multiple Choice

What does area mean?

the distance around a shape

half the distance around a shape

the amount of space outside a shape

the amount of space inside a shape

Multiple Choice

A triangle with a height of 11 ft and a base of 8 ft has an area of what?

88 ft squared

19 ft squared

3 ft squared

44 ft squared

Multiple Choice

What is the area?

56 square cm

28 square cm

32 square cm

19 square cm

Multiple Choice

What is the area?

56 square cm

28 square cm

32 square cm

19 square cm

Area of Semi-Circles and Composite Figures

S CRM 3.2 Lesson 4/5

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