Transcript Lesson 7.1

Bell Ringer
1. 𝐴 = 25𝑐𝑚2
2. 𝐴 = 28𝑖𝑛2
3. 𝐴 = 11.5𝑐𝑚2
4. 𝐴 = 1.5𝑓𝑡 2
7-1 Areas of
Parallelograms
and Triangles
𝐴 = 𝑏ℎ
𝐴 = 5𝑖𝑛 ∙ 4𝑖𝑛
2
𝐴 = 20𝑖𝑛
𝐴 = 𝑏ℎ
𝐴 = 2𝑐𝑚 ∙ 3.5𝑐𝑚
2
𝐴 = 7𝑐𝑚
𝐴 = 𝑏ℎ
𝐴 = 12𝑚 ∙ 9𝑚
2
𝐴 = 108𝑚
Practice
𝐴 = 807.3 𝑚𝑖 2
𝐴 = 55.2 𝑦𝑑 2
𝐴 = 68.9 𝑦𝑑 2
𝐴 = 1617.56 𝑐𝑚2
𝐴 = 12,698,200𝑚2
𝐴 = 1269.82𝑐𝑚2
𝐴 = 𝑏ℎ
𝐴 = 10𝑖𝑛 ∙ 12𝑖𝑛
𝐴 = 120𝑖𝑛2
The Area of ABCD is 120𝑖𝑛2
𝐴 = 𝑏ℎ
120𝑖𝑛2 = 13𝑖𝑛 ∙ 𝐶𝐹
120
= 𝐶𝐹
13
CF is 9.2𝑖𝑛
1
𝐴 = 𝑏ℎ
2
1
𝐴 = ∙ 10𝑓𝑡 ∙ 6.4𝑓𝑡
2
𝐴 = 32𝑓𝑡 2
1
𝐴 = 𝑏ℎ
2
1
𝐴 = ∙ 12𝑐𝑚 ∙ 5𝑐𝑚
2
𝐴 = 30𝑐𝑚2
Practice
𝐴 = 33,512𝑐𝑚2
𝐴 = 639.6𝑓𝑡 2
𝐴 = 517𝑐𝑚2
𝐴 = 934.2𝑓𝑡 2
Classwork
•Pg. 351-352: #1-3, 8-10, 11-24