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Volume
This document defines and provides examples of different types of prisms, including regular prisms like triangles, squares, rectangles, and pentagons as well as irregular prisms. It also defines cuboids, square prisms, and cubes. Formulas for calculating the volume and surface area of prisms are given. Examples of calculating volume using the area of different shapes and length are provided.
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Volume
- 1. volume and surfaceareaMathematics Gr. 7
- 2. Prism •Flat surface •Parallel lines •Sameacross sections •NO CURVES
- 3.
- 4. Irregular Prism •Different fromregular prisms •Irregular Pentagon
- 5. Formulas: •Area = Areax Length •Ex: A triangle has an area of 20 sq. cm and 10 cm long. •20 sq.cm x 10 cm = 200 cubic cm
- 6.
- 7. Square prism •2 sidesare equal •Appearance of a square
- 8. Cube (Hexahedron) •3 sidesare equal •Has a face of a square
- 9. •Note: The name"cuboid" comes from "cube" and -oid (which means "similar to, or resembling") and so says "it is like a cube". •Another use of -oid is when we talk about the Earth being a spheroid (not exactly a sphere, but close). •
- 10. Formulas Volume = L(W)(H) Surface Area = 2(L)W) + 2 (W)H + 2 (L)H
- 11. References: • www.google.com • http://www.mathsisfun.com/geometry/cuboids-rectangular-prisms.html •http://www.mathsisfun.com/geometry/prisms.html