G S Rehill's Interactive Maths Software Series - "Building a Strong Foundation in Mathematics" from mathsteacher.com.au.

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Year 7 Interactive Maths - Second Edition


Problem Solving

Example 4

Find the cost of carpeting a room 10 m long and 6 m wide at $5 per square metre.

Solution:

The floor area is 60 square metres

Cost of carpet to cover 60 square metres is $300.

So, the cost of carpeting the room is $300.

A rectangle of length 10 m and width 6 m


Note:

To find the area of a region enclosed within a plane figure, draw a diagram and write an appropriate formula.  Then substitute the given values and use a calculator, if necessary, to obtain the required area.


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