1.

The length of the rectangle is 4 more than its breadth. Area of the rectangle is 140 square centimeter. Calculate length and breadth

Answer»

Let x be the width of rectangle

length = x + 4 cm

x(x + 4) = 140

x2 – 4 x – 140 = 0

\(x=\frac{4\pm \sqrt{16+560}}{2}=\frac{-4\,\pm\,24}{2}=10,-14\)

width =10 cm 

length = 14 cm



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