I need sum help on this problem

The parking lot of a store has the shape shown. all angles are right angles. what is the area of the parking lot?

Does anyone know how to do geometryme with this problem

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!