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Slide 1

Area Formulas

Slide 2

Slide 3

Rectangle

What is the area formula?

Slide 4

Rectangle

What is the area formula?

bh

Slide 5

Rectangle

What is the area formula?

bh

What other shape has 4 right angles?

Slide 6

Rectangle

What is the area formula?

bh

What other shape has 4 right angles?

Square!

Slide 7

Rectangle

What is the area formula?

bh

What other shape has 4 right angles?

Square!

Can we use the same

area formula?

Slide 8

Rectangle

What is the area formula?

bh

What other shape has 4 right angles?

Square!

Can we use the same

area formula?

Yes

Slide 9

Practice!

Rectangle

Square

10m

17m

14cm

Slide 10

Answers

Rectangle

Square

10m

17m

14cm

196 cm2

170 m2

Slide 11

So then what happens if we cut a rectangle in half?

What shape is made?

Slide 12

So then what happens if we cut a rectangle in half?

What shape is made?

Slide 13

Triangle

So then what happens if we cut a rectangle in half?

What shape is made?

2 Triangles

Slide 14

Triangle

So then what happens if we cut a rectangle in half?

What shape is made?

2 Triangles

So then what happens to the formula?

Slide 15

Triangle

So then what happens if we cut a rectangle in half?

What shape is made?

2 Triangles

So then what happens to the formula?

Slide 16

Triangle

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