Question

The cost of levelling a square ground at Rs 1.80 per meter square is 91936.80. Find the cost of fencing at rs 2.25 per meter.

Answer 1

Cost of leveling the square field or lawn at Rs. $\text{1.80}$ per square meter = Rs. $\text{91936.80}$
So, the area of the square field or lawn (whatever it is) $=\frac{\text{91936.80}}{\text{1.80}}$
$\therefore$ Area, $a^2=51076$ sq m

$\Rightarrow$ Length of each side,$a=\sqrt{51076}$

$\therefore$ Length of each side of square field or lawn $\text{= 226}$ meter

Now,
Perimeter of square field or lawn ,$4a=4\times side$
$\Rightarrow 4\times 226$
Perimeter of square field or lawn $\text{= 904}$ meter

Cost of fencing per meter = Rs. $\text{2.25}$
So, Total cost of fencing the square field or lawn = $=904\times 2.25$
Cost of fencing = Rs.$\text{2034}$