Question

the length of a rectangular field is 20m more than its breath if the perimeter of the field is 280m what is its length​

Answer 1

Answer:

length = 80 m

Step-by-step explanation:

Let the breadth of the rectangle box.

So, the length of the rectangle is (x +20) m.

Since the perimeter of the rectangle= 2(length +breadth)

280 = 2(x +20 + x)

280 = 2(2x + 20)

280 = 4x + 40

4x = 240

x = 60

So, the length = x+20= 60+20= 80 m

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Answer 2

Answer:

Length of rectangular field is 80 m.

Step-by-step explanation:

Given :-

• The length of a rectangular filed is 20 m more than its breadth.
• Perimeter of the rectangular field is 280 m.

To find :-

Length of the rectangular filed.

Solution :-

Let the breadth be x m, then the length will be x + 20 m.

We know,

• Perimeter = 2(Length + Breadth)

Substituting the values :

⇒ 2[(x) + (20 + x)] = 280

⇒ 2(x + 20 + x) = 280

⇒ 2(2x + 20) = 280

⇒ 4x + 40 = 280

⇒ 4x = 280 - 40

⇒ 4x = 240

⇒ x = 240/4

⇒ x = 60

∴ Breadth is 60 m.

So, Length = x + 20 = 60 + 20 = 80 m.

∴ Length of rectangular field is 80 m.