Please help me with this question :)​

The circumference of a circle is 5 pi cm. what is the area of the circle?

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

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.