$\"\"$

Supply curve is $\"\"$ .

Let $\"\"$ be the amount of commodity produced at $\"\"$ .

Selling price is $\"\"$ .

Substitute $\"\"$ in the above eauation.

$\"\"$

Producer surplus of the commodity : $\"\"$ .

Substitute corresponding values in the above equation.

$\"\"$

Therefore, the producer surplus is $\"\"$ .

$\"\"$

The producer surplus is $\"\"$ .