Warm Up

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Warm Up
Problem of the Day
Lesson Presentation
Lesson Quizzes
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Warm Up Find each area. Round to the nearest
tenth, if necessary. 1. a rectangle with length
10 cm and width 4 cm 2. a parallelogram with
base 18 ft and height 12 ft 3. a triangle with
base 16 cm and height 8 cm
40 cm2
216 ft2
64 cm2
78.5 in2
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Problem of the Day Four squares are placed in a
row, adjacent to one another. The square on the
far left is 12 inches on a side. The perimeter of
each of the other squares is half of the one to
its left. What is the perimeter of the combined
figure?
69 in.
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Sunshine State Standards
MA.6.G.4.2 Find theareas of composite
two-dimensional figuresusing various
strategies. Also MA.6.A.3.4
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Additional Example 1A Finding the Area of
Composite Figures by Adding Find the shaded area.
Round to the nearest tenth, if necessary.
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Additional Example 1 Continued Find the shaded
area. Round to the nearest tenth, if necessary.
2 m
8 m
2 m
4 m
6 m
6 m
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Check It Out Example 1 Find the shaded area.
Round to the nearest tenth, if necessary.
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Check It Out Example 1 Continued Find the shaded
area. Round to the nearest tenth, if necessary.
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Additional Example 2 Finding the Area of
Composite Figures by Subtracting
5 ft
Find the shaded area.
6 ft
9 ft
Subtract the area of the triangle
from the area of the rectangle.
12 ft
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Check It Out Example 2
9 in.
Find the shaded area.
5 in.
8 in.
16 in.
area of rectangle A lw 16 8 128 area of
triangle A bh (5 7) (35)
17.5 area of shaded area A 128 - 17.5 110.5
in
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