Lesson 4.pptx mathematics 8 topics 2nd quarter

Mathematics 8

1. Volume of Cone and Sphere This figure is called a cone. The bottom part is a circle called the base. From the base going up, the figure converges at a certain point. The point of convergence is called the vertex. The perpendicular distance from the vertex to the base of the cone is called the height .

2. Examples of cone in real life.

3. A cylinder is made of two circular faces that are congruent and are parallel to each other. These two faces are called bases . They are separated by a perpendicular distance called height .

4. Volume of Cylinder = Area of the Circular Base x Height

5. 3 x Volume of Cone = Volume of Cylinder Volume of Cone = Volume of Cylinder 3 Volume of Cylinder = Area of the Circular Base x Height

6. Volume of Cone = Area of the Circular Base x Height 3 Volume of Cone = x Area of the Circular Base x Height   Volume of Cone = Bh  

7. where: is a constant value pertaining to the ratio of the circumference to the diameter of a circle, and r is the length of the radius of a circle   Base Area B =