Chapter 4 Geometry 9

Auto Added by WPeMatico

Math 9 Chapter 4 Lesson 1: Cylindrical – Area and volume of the cylinder

Math 9 Chapter 4 Lesson 1: Cylindrical – Area and volume of the cylinder 1. Summary of theory 1.1. Cylinder When we rotate the rectangle (ABCD) around a fixed side (CD), we get a cylinder. – The two bases are congruent circles and lie on two parallel planes. – (DC) is the axis of the …

Math 9 Chapter 4 Lesson 1: Cylindrical – Area and volume of the cylinder Read More »

Math 9 Chapter 4 Cones – Truncated cones – Surrounding area and volume of cones, truncated cones

Math 9 Chapter 4 Cones – Truncated cones – Surrounding area and volume of cones, truncated cones 1. Summary of theory 1.1. Cone When a right angled triangle (AOC) is rotated around the side of a fixed right angle (OA), a cone is obtained. – The side (OC) forms the base of the cone, which …

Math 9 Chapter 4 Cones – Truncated cones – Surrounding area and volume of cones, truncated cones Read More »

Math 9 Chapter 4 Lesson 3: Sphere Sphere Area and Sphere Volume

Math 9 Chapter 4 Lesson 3: Sphere Sphere Area and Sphere Volume 1. Summary of theory 1.1. Globular When rotating a semicircle with center (O), radius (R) one circle around a fixed diameter (AB), a sphere is obtained. – The point (O) is called the center, the length (R) is the radius of the sphere. …

Math 9 Chapter 4 Lesson 3: Sphere Sphere Area and Sphere Volume Read More »

Math 9 Review chapter 4: Cylinder – Cone – Sphere

Math 9 Review chapter 4: Cylinder – Cone – Sphere 1. Summary of theory 1.1. Cylinder a. Area around the cylinder With base radius r and height h, we have: Surrounding area: (S_{xq}=2pi rh) Total Area: (S_{tp}=2pi rh+2pi r^2) b. Cylindrical volume The volume of the cylinder is given by the formula: (V=Sh=pi r^2h) 1.2. …

Math 9 Review chapter 4: Cylinder – Cone – Sphere Read More »