Surface area of cuboids and prisms

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# Surface area of cuboids and prisms - PowerPoint PPT Presentation

Surface area of cuboids and prisms. Grade C work. Find the area of these shapes. Surface area is the sum of the areas of all the faces!. 12+12+18+18+24+24 = 108cm 2. Method 1. Top and bottom = 24cm 2 Left and right = 18cm 2 Front and back = 12cm 2 2x24 + 2x18 + 2x12 = 108cm 2. Method 2.

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## PowerPoint Slideshow about 'Surface area of cuboids and prisms' - neil

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Presentation Transcript

### Surface area of cuboids and prisms

Top and bottom = 24cm2

Left and right = 18cm2

Front and back = 12cm2

2x24 + 2x18 + 2x12 = 108cm2

Method 2

Questions:

How do we find the area of a triangle?

The surface area is the _ _ _ of the areas of all the _ _ _ _ _ .

How many faces does a cuboid have?

What is the surface area of a 5cm cube?