Question

the length of a rectangular field is twice it's breadth. a girl jogged around it 4 times and covered a distance of 4.5km. what is the length of a field
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Answer 1

Answer:

4.5 is the perimeter of rectangle.

let breath be x

then, length = 2x

perimeter=2(l+b)

4.5=2(2x+x)

4.5=2×3x

4.5/2=3x

0.750=x

so breath = 750m

length= 750×2=1500m