Please I need some answers

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why

What is best way to getting answer for my exam is

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?