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Lesson 10-8 Pages 539-543. Area: Irregular Figures. What you will learn!. How to find the area of irregular figures. Vocabulary. What you really need to know!. To find the area of an irregular figure, separate the irregular figure into figures whose area you know how to find. Example 1:. - PowerPoint PPT Presentation
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Lesson 10-8 Pages 539-543
Area: Irregular Figures
What you will learn!
How to find the area of irregular figures.
What you really need to know!
To find the area of an irregular figure, separate the irregular figure into figures whose area you know how to find.
Example 1:
Find the area of the irregular figure to the nearest tenth.
Example 1:
There is a square, a triangle, and a quarter of a circle.
4)(
2
1
2
ra
bha
lwa
Example 1:
There is a square, a triangle, and a quarter of a circle.
4)2(
422
1
22
2
a
a
a
Example 1:
There is a square, a triangle, and a quarter of a circle.
1.3
4
4
a
a
a
Example 1:
There is a square, a triangle, and a quarter of a circle.
21.11 in
Example 2:
Carpeting cost $2 per square foot. How much will it cost to carpet the area shown?
There are two rectangles and one triangle.
Example 2:
bha
lwa
lwa
2
1
Example 2:
12142
1
33
1014
a
a
a
Example 2:
84
9
140
a
a
a
Example 2:
2233 fta
$2 x 233ft2 =
$466
Page 541
Guided Practice
#’s 3-6
Pages 539-541 with someone at home and
study examples!
Read:
Homework: Pages 542-543
#’s 7-10, 16-22
#’s 26-35
Lesson Check Ch-10
Study Guide and Review
Pages
544-548
#’s 1-33(Odd answers in back of book)
Prepare for Test!
Page
549
#’s 1-20 Lesson CheckCh-10
Prepare for Test!
Pages
550-551
#’s 1-19
#16 Ch Test 2A
Page
750
Lesson 10-8
D’E’
F’G’
E’
F’
G’
H’
X’W’
Y’Z’
8ft
12 ft more
4ft
16 ft
4 ft
A = r2
A = 162
A 804 ft2
A = r2
A = 42
A 50 ft2
804 – 50 = 754 ft2
3 units 1 unit
9u2
1u2
9 : 1