Question

The length of a rectangular field is thrice it's breadth. If it's perimeter is 560 m, then it's length is ​

Answer 1

Answer:

Breadth =x

Length =3x

Perimeter =2(length+breadth)

Perimeter ⇒2(x+3x)=400

⇒2(4x)=400

⇒x=50

Length =3x=150m

Breadth =x=50m

Explanation:

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Answer 2

Answer:

Solution:

ATQ

Length of a rectangular field is thrice it's breadth

Let length of rectangular field be = 3x

And

Breadth of rectangular field = x

Perimeter of rectangular field = 560m

Now as we know perimeter of rectangular field is equivalent to 2(Length + Breadth).

560 = 2(3x + x)

560 = 2(4x)

560 = 8x

x = 70m

3x = 3×70 = 210m

Breadth of rectangular field = x = 70m

Length of rectangular field = 3x = 210m

Hence, Length of rectangular field is 210m