Question

The cost of leveling a square field at Rs. 10 per sq. metre is Rs. 1,960. Find the cost of fencing the square at Rs. 15 per metre.

Answer 1

Area of square field leveled $=\frac{1960}{10}=196m^2$

${\left(Side\right)}^2=196m^2\Rightarrow Side=\sqrt{196}$

$\Rightarrow$ Side of square field $=14m$

Perimeter of field $=4\times 14=56m$

Cost of fencing $=Rs.(56\times 15)=Rs.840$