area of rectantangle is 51.2dm2 and the sides are in the ratio 5:4. find its perimeter
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let sides 4x &5x
area=4x×5x
51.2=20x^2
51.2÷20=x^2
2.16=x^2
X=1.6
area=4x×5x
51.2=20x^2
51.2÷20=x^2
2.16=x^2
X=1.6
Answered by
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Ans will be 1.6 ....
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