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Work out the area of a rectangle with base, b = 38mm and perimeter, P = 78mm.

 Oct 3, 2018
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Perimeter = B  + B + H + H = 78

                 = 38 + 38 + H + H = 78

                      2H = 2     H= 1 mm

 

 

Area = B * H =   38 x 1 = 38 mm^2

 Oct 3, 2018

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