Tag: formulae

Measurement- Linear & Area

Area

Today for Maths we had to find the area, perimeter, labour cost, cost per square meter and GST  of a shape for a shade sail that was split into a rectangle and a triangle.

1, Find the area of shape 1 (Rectangle)

9 x 5

= 45 sq meters

2, Find the area of shape 2 (Triangle)

5 x 5

=25 ÷ 2

= 12.5 sq meters

3, Add together the are of shape 1 and 2 to find the total area

45 + 12.5

= 57.5 sq meters

4, Add together the length of each side to find the total perimeter

9 + 5 + 14 + 7

= 35 m

5, Find the cost of labour ($25.60 per hour for 4 hours)

4 x 25.60

= $102.4

6, Find the price of fabric ($8.95 per sq meter)

8.95 x 57.5

= $514.62

 7, Find the cost of labour + fabric

103.4 + 514.62

= $ 617.02

8, Find GST on its own

617.02 x 0.15

= $92.55

9, Total price with GST

617.02 + 92.55

= $709.57