Chapter 29 Volume & Surface Area.

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Presentation transcript:

Chapter 29 Volume & Surface Area

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

3-d Shapes Tetrahedron Sphere Face Vertex Square based Pyramid Cuboid Cylinder Cone Edge

Plans & Elevations View from above is a plan View from front or sides is an elevation

Cuboid Vol = l×b×h Surface Area = The area of ALL 6 faces totalled

Prisms A prism is a solid shape which is the same shape the whole way through

Volume of a Prism Vol = Area of cross-section × length SPECIAL CASE: cylinder Vol of cylinder = π × r2 × h

Surface Area of Cylinder Area of circle = π×r2 Circumference of circle = 2πr Area of rectangle = length × breadth