A cost of cultivating a square field at a rate of ₹

Home » Aptitude » Area and Perimeter » Question

A cost of cultivating a square field at a rate of ₹ 135 per hectare is ₹ 1215. The cost of putting a fence around it at the rate of 75 paise per meter wouldbe

1. ₹ 360
2. ₹ 810
3. ₹ 900
4. ₹ 1800
5. None of the above

Correct Option: C

Area of the field =1215/135 = 9 hec
= 90000 m² [1 hec =10000 m²]
∴ Side of the field = √90000 = 300 m
Perimeter of the field = 4 x 300 = 1200 m

Now, cost of putting a fence around field = (1200 x 75)/100 = ₹ 900