Question

The cost of fencing a rectangular garden at ruppes 21 per metre is ruppes 1365.If it's length is 21m, find the breadth. ​

Answer 1

Fencing is done at the perimeter so, perimeter of rectangular park=2(l+b)=2(350+250)

⇒2×600=1200m

Rate of fencing per meter=Rs. 18.50

∴ Rate of fencing 1200 m =Rs.8.50×1200

=Rs.22,200

Answer 2

☆ Solution ☆

Given :-

• The cost of fencing a rectangular garden at ruppes 21 per metre is ruppes 1365.If it's length is 21m .

To Find :-

• The breadth .

Step-by-Step-Explaination :-

Fencing cost per meter = Rs. 21

cost of the fencing the garden = 1365 Rs.

Total fencing used = 1365/ 21

= 65

Now,

We will find the breadth of garden

As we know that :-

Perimeter of rectangle = 2 ( l + b )

65 = 2 ( 21 + b )

65 = 42 + 2B

2B = 65 - 42 = 23

B = 11.5 m

Hence,

Breadth of the garden = 11.5 m