Find the area of the circle shown Use pi=3.14

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?