Jason has 36m of fencing. Here are 3 different ways he can fence his pool: a) Make a square fence. b) The length of the fence is twice its width. c) Jason only needs fencing on three sides. The unfenced side is 8m. For each of the above:

Find the dimensions of the region fenced.

Find the area of the region fenced.

The drama club needs a plywood box with these dimensions: 70cm by 40cm by 50cm. It will be used as a prop in a play. a) How much plywood is needed? b) Another box is built with each dimension twice as great. How much plywood is needed for this box? c) A sheet of plywood has an area of 2.4 m squared. How many sheets will be needed for both boxes.

## Square Numbers

9 is a square number as 3x3 = 9

The square root of 9 is 3.

The following are a list of square numbers - 4, 9, 16, 25, 36, 49...

## Area of a parallelogram:

## Area of a triangle:

Here are some worksheets for practise:

http://www.mathworksheets4kids.com/triangles/area-fig.pdf

http://www.mathworksheets4kids.com/area/parallelogram-area-fig.pdf

REVIEW QUESTIONSJason has 36m of fencing. Here are 3 different ways he can fence his pool:

a) Make a square fence.

b) The length of the fence is twice its width.

c) Jason only needs fencing on three sides. The unfenced side is 8m.

For each of the above:

The drama club needs a plywood box with these dimensions: 70cm by 40cm by 50cm.

It will be used as a prop in a play.

a) How much plywood is needed?

b) Another box is built with each dimension twice as great. How much plywood is needed for this box?

c) A sheet of plywood has an area of 2.4 m squared. How many sheets will be needed for both boxes.