Area of reactangle is 51.4 dm and the sides are in the ratio 5:4 finds its perimeter
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Let '5x' and '4x' be length and breadth of a rectangle respectively
Area of rectangle= length x breadth
51.4 cm²=5x x 4x
=20x²
51.4/20=x²
√2.57=x
. x=1.6
l=8cm , b=6.4cm
Perimeter=2(l+b)
=2(8+6.4)
=2 x 14.4
=28.8cm
Area of rectangle= length x breadth
51.4 cm²=5x x 4x
=20x²
51.4/20=x²
√2.57=x
. x=1.6
l=8cm , b=6.4cm
Perimeter=2(l+b)
=2(8+6.4)
=2 x 14.4
=28.8cm
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