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13 A rectangle of area 105 cm2 has its length equal to x cm. Write down its breadth interms of x. Given that the perimeter is 44 cm, write down an equation in x and solveit to determine the dimensions of the rectangle. |
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Answer» length x and suppose breadth is yand perimeter is 44so x+y=22so y=22-xarea is 105x(22-x)=105so x^2-22x+105=0si x=15 or x=7so if length is 7 breadth is 15if length is 15 breadth is 7 |
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