18. Find the cost of laying

An engineer drafts a graph depicting the outline of a park is drawn by joining the vertices $A (-11, 7)$, $B (-6, -6)$, $C (8, -2)$ and $D (4, 7)$. He plans to lay paver blocks throughout the park. If the cost of laying the blocks is $₹$1150 per square foot, then find the cost of laying the blocks for the park.

 

Answer:

 

The cost of laying paver blocks $=$ $₹$.