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Transcript of Volume
![Page 1: Volume](https://reader038.fdocuments.in/reader038/viewer/2022110311/55b7c35fbb61eb0d068b4601/html5/thumbnails/1.jpg)
volume and surface area Mathematics Gr. 7
![Page 2: Volume](https://reader038.fdocuments.in/reader038/viewer/2022110311/55b7c35fbb61eb0d068b4601/html5/thumbnails/2.jpg)
Prism
•Flat surface
•Parallel lines
•Same across sections
•NO CURVES
![Page 3: Volume](https://reader038.fdocuments.in/reader038/viewer/2022110311/55b7c35fbb61eb0d068b4601/html5/thumbnails/3.jpg)
Regular Prisms
•Triangle
•Square
•Rectangular
•Penatgonal
![Page 4: Volume](https://reader038.fdocuments.in/reader038/viewer/2022110311/55b7c35fbb61eb0d068b4601/html5/thumbnails/4.jpg)
Irregular Prism
•Different from regular prisms
•Irregular Pentagon
![Page 5: Volume](https://reader038.fdocuments.in/reader038/viewer/2022110311/55b7c35fbb61eb0d068b4601/html5/thumbnails/5.jpg)
Formulas:
•Area = Area x Length
•Ex: A triangle has an area of 20 sq. cm and 10 cm long.
•20 sq.cm x 10 cm = 200 cubic cm
![Page 6: Volume](https://reader038.fdocuments.in/reader038/viewer/2022110311/55b7c35fbb61eb0d068b4601/html5/thumbnails/6.jpg)
Cubiod
•Box shape
•Rectangular prism
•Right angle
![Page 7: Volume](https://reader038.fdocuments.in/reader038/viewer/2022110311/55b7c35fbb61eb0d068b4601/html5/thumbnails/7.jpg)
Square prism
•2 sides are equal
•Appearance of a square
![Page 8: Volume](https://reader038.fdocuments.in/reader038/viewer/2022110311/55b7c35fbb61eb0d068b4601/html5/thumbnails/8.jpg)
Cube (Hexahedron)
•3 sides are equal
•Has a face of a square
![Page 9: Volume](https://reader038.fdocuments.in/reader038/viewer/2022110311/55b7c35fbb61eb0d068b4601/html5/thumbnails/9.jpg)
•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).
•
![Page 10: Volume](https://reader038.fdocuments.in/reader038/viewer/2022110311/55b7c35fbb61eb0d068b4601/html5/thumbnails/10.jpg)
Formulas
Volume = L(W) (H)
Surface Area = 2(L)W) + 2 (W)H + 2 (L)H
![Page 11: Volume](https://reader038.fdocuments.in/reader038/viewer/2022110311/55b7c35fbb61eb0d068b4601/html5/thumbnails/11.jpg)
References:
• www.google.com
• http://www.mathsisfun.com/geometry/cuboids-rectangular-prisms.html
• http://www.mathsisfun.com/geometry/prisms.html