Applications of Areas and Volume

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Presentation transcript:

Applications of Areas and Volume Topic 6

Areas It is expected that you know each of the following formulas, they will not be provided. It is expected that work such as this is revision and we will move quickly. If you need more help, then please ask.

Example Find the area of the following triangle. 10m 5m x m A = ½bh

Area problems Hints Remember your units If the units in the question (eg cm) are different to the units required in the answer (eg m2), change to the required units before you perform your calculations.

Hectares A hectare (ha) is the area of a square of side length 100m. Hectares are used for large areas such as farms. 100m 1 ha = 100m × 100m = 10,000m2 Example 1 Convert 4·3 ha = m2 5600 m2 = ha 43 000 0·56

Example 2 The area of a rectangle is 27·44 m2. If the length is 4·9 m, find the breadth. A = LB 27·44 = 4·9 × B Divide both sides by 4·9 B = 5·6

Today’s work Exercise 6A Page 189 #3eg, 4acegi, 7, 9, 10, 12 Sheet – A page of plane shapes All questions