La base de un rectángulo que tiene 52 dm2 de área y su altura mide 4 dm

Can someone me and plz do the problem

How do you solve a question like this?

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.