Question

What is the length of the outer boundary of the park shown in Figure. What will be the total cost of fencing it at the rate of $Rs.20$ per meter? There is a rectangular flower bed in the centre of the park. Find the cost of manuring the flower bed at the rate of $Rs.50$ per square meter.

Answer 1

Addition of all Sides of Given figure is called perimeter
$\therefore$ Perimeter of the given figure $=(200+300+80+300+200+260)m=1340m$
$\therefore$ Total cost of fencing it at the rate of $Rs.20$ per meter
$=Rs.(1340\times 20)=Rs.26800$
$\therefore$ Area of the flower bed $=(100\times 80)m^2=8000m^2$
Now, cost of manuring the flower bed at the rate of $Rs.50$ per square meter $=Rs.(50\times 8000)=Rs.400000$.