Question

length and breadth of a rectangular field are in ratio 7 is to 4 if its perimeter is 440 metre find its length and breadth​

Answer 1

Answer:

Let the l=7x and b=4x

perimeter=440m

440=2(l+b)

440=2(7x+4x)

440=2×11x

220=11x

x=220/11

X=20m

l=7x=7×20=140m

B=4x=4×20=80m

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Answer 2

Answer:

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★ Given:-

●Ratio of length and breadth=7:4

● Perimeter of rectangular field=440

★ Solution:-

Let's consider the length as 7x m

And the breadth as 4x m.

According to question:-

2(7x+4x)=440

$\implies 2\times 11x =440$

$\implies 22x =440$

$\implies x =\frac{440}{22}\:m$

$\implies x =20\:m.$

Putting the value of x into length's position,

Length = 7x m

Length = 7 × 20 m

★ Length = 140 m

Putting the value of x in the breadth's position,

Breadth = 4x m

Breadth = 4 × 20 m

★ Breadth = 80 m

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