Question

The cost of leveling a square lawn at $Rs15$ per square meter is $Rs19,935$. Find the cost of fencing the lawn at $Rs22$ per metre.

Answer 1

Area of square lawn $=\frac{Totalcost}{Rate}$$=\frac{19935}{15}=1329$

$a^2=1329$

$a=36.455$

Perimeter $=4a=145.821$

Cost of fencing $=145.82\times 22$$=3208$ Rs.