1.

the perimeter of a rectangle is 15.8cm and its area is 13.5cm^2. find the lengths of the sides of the rectangle

Answer»

Let LENGTH be X and breadth be y. Perimeter of RECTANGLE =2(length +breadth)=2(x+y)=15.8.
=>x+y=7.9.
Area of rectangle=13.5 =xy.=>y=13.5/x.
=>x+13.5/x=7.9
=>x^2+13.5-7.9x=0
=>x=2.5 and 5.4
Length =5.4cm and Breadth=2.5cm.



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