¯\_(ツ)_/¯ I’m so confused

What is the circumference of the pie

Sally deposited money into a savings account paying 4% simple interest per year.the first year,she earned $75 in interest.how much interest will she earn during the following year?

|p| > 3 {-3, 3} {p|-3 < p < 3} {p|p < -3 or p > 3}