Question

find the area of the rectangular field whose length is twice its breadth is 2450
metres find the perimeter of the field​

Answer 1

Here's the approach:(Try the question yourself, it'll be helpful)

Let the breadth be x. Now your length would be 2x.

And area= lxb

Hence, area=(x)(2x)

Now just solve the quadratic. You will get a x=35(Discard the negative value)

Since you have x, just calculate the perimeter.

Voila.

Answer 2

✬ Perimeter = 210 m ✬

Step-by-step explanation:

Given:

• Area of rectangular field is 2450 m².
• Length of field is twice it's breadth.

To Find:

• What is the perimeter of field?

Solution: Let the breadth be x. Therefore,

➯ Length = 2 times of breadth.

➯ Length = 2x

As we know that

★ Ar. of Rectangle = Length • Breadth ★

A/q

$\implies{\rm }$ 2450 = 2x $\times$ x

$\implies{\rm }$ 2450 = 2x²

$\implies{\rm }$ 2450/2 = x²

$\implies{\rm }$ 1225 = x²

$\implies{\rm }$ √1225 = x

$\implies{\rm }$ 35 = x

So,

➙ Breadth of field = x = 35 m

➙ Length of field = 2x = 2(35) = 70 m

Now,

★ Perimeter of Rectangle = 2(Length + Breadth) ★

➙ Perimeter = 2(70 + 35)

➙ Perimeter = 2(105) = 210 meters

Hence, Perimeter of rectangular field is 210 m.