Area, SM-Bank 080

Bobby used 3 litres of varnish to paint the loungeroom floor.

The floor was a square with sides 6 metres long.

How many litres of varnish would he need to paint a rectangular floor which is 6 metres long and 10 metres wide? (2 marks)

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\(5\ \text{litres}\)

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\(\text{Area of square floor}\)

\(=6^2\)

\(=36\ \text{m}^2\)

\(\text{Area of rectangular floor}\)

\(=6\times 10\)

\(=60\ \text{m}^2\)

\(\text{Paint needed for rectangular wall}\)

\(=\dfrac{60}{36}\times 3\)

\(=5\ \text{litres}\)