Practice question · Estimate
A canvas 1.2 metres by 0.9 metres is to be sized. At a coverage of about 8 square metres per litre, how many millilitres does one coat need?
Estimate on a scale from 0 ml (0) to 500 ml (500).
Hints
- Work out the area first.
- Divide the area by 8, then convert litres to millilitres.
Show the answer
135 (answers within ±15 count)
Why
About 135 ml. The area is 1.08 square metres and 1.08 divided by 8 is 0.135 litres. The coverage figure is a property of the particular size and the absorbency of the cloth rather than a constant, so it is worth measuring once on your own materials and writing it down.
Practise Supports, Stretchers, Sizing and Grounds
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