Area of Common Shapes.

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Presentation transcript:

Area of Common Shapes

8cm Rectangles 2cm How many squares do you need to fill the rectangle? Area of a rectangle = Length x Width

Triangles 6cm 3cm What is the area of the rectangle? What shape is created when I cut the rectangle in half?

3cm 6cm Triangles What is the area of the triangle?

Is the area of the triangle still half the area of the rectangle?

Triangles Find the area of these triangles 3cm 12cm2 8cm Can you think of some more triangles with the same area? 4cm 12cm2 6cm

Parallelogram What is the name of this shape? How can you find the area of this shape? Parallelogram

Parallelogram What is the area of this parallelogram? 4cm 5cm 50cm2 What is the height of this parallelogram? 60cm2 ? 12cm 5cm

a b h b a h If I stick two trapeziums together, what shape do I get? Trapezium How do I find the area of the two shapes together? How do I find the area of just one trapezium? Area of a trapezium = (a+b)h 2