Cube Rectangular Prism Cylinder CUBE The volume of

Cube Rectangular Prism Cylinder

CUBE The volume of a threedimensional figure is the amount of space within it. That is, the volume of a polyhedron is equal to the number of unit cubes that can fit inside it.

Creating CUBE Create 3 cm x 3 cm cube using the figure below. Note: Please disregard the (“) sign denoting (inches)

CUBE A 3 cm x 3 cm cube Note: The cube will look like this. Fill in the cubes in a rectangular box. How many cube units are there in all? in the rectangular Prism? Bigger Cube?

Using ICT, volume can be illustrated like this: � Click on the link: http: //illuminations. nctm. org/activitydetail. asp x? id=6 The page will look like this.

…or like this one. � Click on the link: http: //www. learner. org/interactives/geometry/ area_volume. html The page will look like this.

So, from illustrations how do we get the formula of Volume? Volume of a rectangular Prism = length times width times height or V= l x w x h

What is the volume? If l = 7 cm and w = 5 cm and h = 2 cm, then the volume would be: V = (7 cm)(5 cm)(2 cm) = 70 3 cm

CYLINDER A cylinder is a right circular prism, and like all prisms, the volume is found by multiplying the area of one end of the cylinder by its height. http: //www. learner. org/interactives/geo metry/area_volume 2. html

CYLINDER Its volume is the number of cubic units that will exactly fill a cylinder. http: //www. mathopenref. com/cylindervolume. html

Formula: Volume of the Cylinder is equal to the area of a circle, πr 2 and multiplied by the cylinder’s height. 2 V=πr h

http: //www. gcsemathstutor. com/g g-ss-vol-04. php