Question

the length and breadth of the rectangular ground are in ratio 7:5. If the area of the ground is 6860 sq m find the cost of fencing the ground at rupees 6.50 per metre. ​

Answer 1

Ratio of length to bradth = 5:3

So, let length = 5x and breadth = 3x.

Cost of fencing = Rs. 7 per m

Total cost = Rs. 2800

Therefore, perimeter = 400 m

2(5x+3x)=400

8x=200

x=25

So, length = 125 m

Breadth = 75 m

Area = 125×75=9375 m ^2

Answer 2

Answer:

Step-by-step explanation:

Ratio of length to bradth = 5:3

So, let length = 5x and breadth = 3x.

Cost of fencing = Rs. 7 per m

Total cost = Rs. 2800

Therefore, perimeter = 400 m

2(5x+3x)=400

8x=200

x=25

So, length = 125 m

Breadth = 75 m

Area = 125×75=9375 m  

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