Question

The sides of a rectangular plot are in the ratio 5 : 4 and its area is equal to 500 m2 . The perimeter of the plot is (A) 80 m (B) 100 m (C) 90 m (D) 95 m answer is 100​

Answer 1

Answer:

90m(C)

Step-by-step explanation:

Let sides be 5x:4x

Area=lb

5x X 4x=20x^2=500

x^2=500/20=25

x=5...............................1

Perimeter =2(5x+4x)=2 X 9x=18x

Substitute the value of x

18 X 5= 90m(C)

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