7. Find the cost of levelling the field

A field is in the form of an isosceles trapezium with parallel sides measuring 98 $m$ and 140 $m$ long. The distance between the parallel sides is 32 $m$. Find the cost of levelling it at the rate of $₹$77 per $m²$.

 

 

The total cost of levelling the ground $=\ ₹$.