Question

It costs Rs 936 to fence a square field at Rs 7.80 per metre. Find the cost of levelling the
field at Rs 2.50 per square metre.​

Answer 1

Answer:

Given 

Cost of fencing the square field at Rs. 7.80 per metre =Rs.936

So, total length of fence =7.80936=120

Thus, the perimeter of the field =120 m

⇒4× side =120 m

⇒ side =4120=30 m

∴  Area of square field =(30)2=900m2

Hence, Cost of levelling the field =900×2.50=Rs.22.50