How many edges does each of following solids have?
- (a)Cone
- (b)Cylinder
- (c)Sphere
- (d)Octagonal Pyramid (e) Hexagonal Prism (f) Kaleidoscope The volume of a three-dimensional figure is the number of cubes it can hold. One cube represents one cubic unit of volume. 1. Use centimetre cubes to build the rectangular prism shown. What are the length, width and height of the prism? How many cubes does the prism hold? 2. You can find out how many cubes the prism holds without counting every cube. First look at the prism from above. How can you find the number of cubes in the top layer without counting every cube? Top 3. Now look at the prism from the side. How many layers does the prism have? How can you use this to find the total number of cubes in the prism? Side 1. Describe a shortcut for finding the number of cubes in a rectangular prism. 2. Suppose you know the area of the base of a prism and the height of the prism. How can you find the prism’s volume? 3. Let the area of the base of a prism be B and the height of the prism be h. Write a formula for the prism’s volume V.
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(a) Cone
(b) Cylinder
(c) Sphere
(d) Octagonal Pyramid (e) Hexagonal Prism (f) Kaleidoscope The volume of a three-dimensional figure is the number of cubes it can hold. One cube represents one cubic unit of volume. 1. Use centimetre cubes to build the rectangular prism shown. What are the length, width and height of the prism? How many cubes does the prism hold? 2. You can find out how many cubes the prism holds without counting every cube. First look at the prism from above. How can you find the number of cubes in the top layer without counting every cube? Top 3. Now look at the prism from the side. How many layers does the prism have? How can you use this to find the total number of cubes in the prism? Side 1. Describe a shortcut for finding the number of cubes in a rectangular prism. 2. Suppose you know the area of the base of a prism and the height of the prism. How can you find the prism’s volume? 3. Let the area of the base of a prism be B and the height of the prism be h. Write a formula for the prism’s volume V.