Question

the length of a rectangular field who is twice its breadth and its area is 2 hectare find the cost of fencing the field at 50 rupees per metre​

Answer 1

Answer:

Step-by-step explanation:

Let breadth be a

Let length be 2a

1 hectare = 10,000 sq.m

2 hectare = 10,000 x 2

= 20,000 sq.m

Area of rectangle = length x breadth

20,000 = 2a x a

20,000 = 2a^2

20,000/2 = a^2

10,000 = a^2

root10,000 = a

100 = a

Therefore, breadth = a = 100 metres

length = 2a = 2 x 100 = 200 metres

Perimeter = 2(length + breadth)

= 2(200 + 100)

= 2 x 300

= 600 sq.m

Cost per sq.m = rupees 50

Total cost = Perimeter x Cost per sq.m

= 600 x 50

= 30,000 rupees

Answer 2

Answer:

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