Sunday, December 2, 2012

Rational Number Test - Question 10

10. A 1-L can of paint covers 12m(squared). Determine the maximum dimensions of a sqaure ceiling you could paint with 3 1/2 L of paint. Express your answer to the nearest hundredth of a metre.

          x3.5
L    1   =  3.5 
C   12      42
          x3.5

L= litres              C= cans of paint

square root of 42= 6.48

The maximum dimensions of a sqaure ceiling you could paint is 6.48m by 6.48m.

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