Question

the length and breadth of a rectangular field are into the ratio 3 ratio 2 if the area of the field is 3456 square metre find the cost of fencing the field at 4 rupee per metre ​

Answer 1

Answer:

Let length be 3x

and breadth=2x

Area= l×b

3456=3x×2x

3456=6x^2

3456÷6=x^2

576=x^2

x=24

therefore length = 3×24 = 72

and breadth = 2×24 = 48

Perimeter = 2(l+b)

2(72+48)

2(120)

Perimeter =240m

Cost=rate×perimeter

= 4×240

=Rs. 960

Answer 2

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