Question

the ratio of the length of a rectangular plot to its breadth is 7:3. if the length is 280m,find the breadth of plot.​

Answer 1

It is given that,

Perimeter of rectangular field = 440 m.

Consider 7x as the length and 3x as the breadth of rectangular field.

So we get,

2(l+b) = Perimeter.

Substituting the values,

2(7x+3x)=440

By further calculation,

2(10x)=440

20x=440

So we get,

x=440/20=22m.

Here,

Length = 7x=7∗22=154 m.

Breadth = 3x=3∗22=66 m.

We know that,

Cost of fencing = ₹150 per m.

So the cost of fencing 440 m = 150∗440 = ₹ 66,000.

Answer 2

Answer:

Let the length be 7x

Breadth be 3x

Given

Length = 280

7x = 280

x = 40

Putting the value of x in breadth

3x = 3*40

Breadth = 120 Ans