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Chapter 29 Volume & Surface Area
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Learning Objectives Recognise 3-d objects Draw nets
Understand terms used in 3-d objects Sketch plans Sketch elevations Find surface area of a cuboid Find volume of a cuboid Find volume of a prism Find volume of a cylinder Find surface area of a cylinder
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3-d Shapes Tetrahedron Sphere Face Vertex Square based Pyramid Cuboid
Cylinder Cone Edge
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Plans & Elevations View from above is a plan
View from front or sides is an elevation
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Cuboid Vol = l×b×h Surface Area = The area of ALL 6 faces totalled
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Prisms A prism is a solid shape which is the same shape the whole way through
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Volume of a Prism Vol = Area of cross-section × length
SPECIAL CASE: cylinder Vol of cylinder = π × r2 × h
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Surface Area of Cylinder
Area of circle = π×r2 Circumference of circle = 2πr Area of rectangle = length × breadth
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