当前位置:首页 >> 数学 >>

Chapter7C1.surface area


Chapter7C.1. Surface area Michael Liu Grade 9 Definition:surface area ?A plane face is one which is flat. ?This means that the surface area is the same as the area of the net required to m

ake the Definition:surface area ?What does it mean to you? ?The surface area of a threedimensional solid with plane faces is the sum of the areas of the faces. Example : Triangular prism ? The surface area of the following triangular prism. B'' B' B' A'' B C' The SA is same as the area of : Area of side 1 Area of side 2 Area of side 3 Vocabulary A rectangular prism always has 6 faces, or sides. ____ Top Back Side 2 Front Bottom Side 1 Height (H) Width (W) Length (L) 5 More About Faces wait.. 1 Vocabulary To help us see all six faces of a rectangular prism, mathematicians sometimes unfold the rectangular prism to see a drawing called a net. Top Side Side Front Side Top Front Bottom You can easily see all three pairs of faces in a net. Internet applet: 7 Back Net of a cube wait.. 1 Practice – Independent Example So, how do we find the surface area of this rectangular prism? Let’s try an example… Front Back Side 1 Side 2 Top Bottom Take a couple minutes to see how many faces you can find the area of. If you can, also try to find the total surface area. 3 cm 4 cm 2 cm 8 Scaffolding Practice – Guided Example Surface area of the rectangular prism Side 2 Top Side Front Side Remember: Bottom Back Back Front = 4 cm x 3 cm = 12 cm2 = 12 cm2 = 6 cm2 = 6 cm2 = 8

相关文章:
chapter7 机电系统(13-03-28)
Chapter 7 机械与电气系统 7.1 施工内容简述根据招标文件的说明,本合同机电系统主要有:航站楼、空中交通控制塔、飞机库、气象站、 机场消防&与急救服务(AFRS) ...
chapter7_6e数组
C​+​+​练​习​题Test Bank for Problem Solving with C++: The Object of Programming, 6/e Chapter 7 Arrays TRUE/FALSE 1. The indexed ...
信号与系统奥本海姆英文版课后答案chapter7
信号与系统奥本海姆英文版课后答案chapter7_理学_高等教育_教育专区。信号与系统...(c) From chapter 4, FT y(t) =x2(t) ??? Y (jw)= (1/2п )[...
修改chapter7 Digestive system
Chapter 7 Digestive system Anatomy and Physiology...Taste buds are found on the surface of the ...colitis C. 1. postprandial 2. cholelithiasis 3....
Managerial Economics Micheal chapter7 answer
$1Chapter 7: Answers to Questions and Problems ...9. a. b. c. d. 10. Industry A is a ...On the surface the industry analysts’ suggestion ...
econ190 chapter7
c​h​a​p​t​e​r​7​ ​...Chapter 7 1. Explain how buyers’ willingness to...Consumer surplus is the area below the demand ...
工程热力学课后作业答案chapter7
工程热力学课后作业答案chapter7_工学_高等教育_教育专区。工程热力学课后作业答案,建工版 7-1 当水的温度 t=80℃,压力分别为 0.01、0.05、0.1、0.5 及 ...
九年级 Chapter7练习题
1下载券 句式转换练习题chapter7 暂无评价 2页 免费 C程序设计(例子程序及练...halls,and staircases take up a far larger area than the theatre itself. ...
扩频通信chapter7
扩频通信chapter7 扩频通信扩频通信隐藏>> 第七章 扩展频谱系统 7.1 扩频系统的处理增益 对于一般的通信系统,常把信道模型简化为稳态的加性白色高斯噪声(AWGN) ...
NSS Mastering Biology Suggested Answer Book 1B (eng)
Chapter 7 Exercise 1 5 9 D C C Gas exchange in humans 2 6 10 B ...surface area of numerous air sacs Quality of written communication 0.5m 0...
更多相关标签: