• # question_answer 13) Find the cost of fencing a square park of side 250 m at the rate of  20 per metre. TIPS To find the cost of fencing, multiply the perimeter of square ($4\times$ length of side) by rate of fencing.

Given, side of square park = 250 m Then, the perimeter of square park $=4\times$ Length of side of park $=4\times 250m=1000m$ Cost of fencing per metre =  20 $\therefore$ Cost of fencing 2000m $=1000\times 20$=  20000 Hence, the cost of fencing a square park is  20000.