What is a geometric figure with only two dimensions, length and width?

Anyone know? will mark brainliest if correct

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.

Factor and solve to find roots x squared -x - 90 =0