What is the circumference of a circle that has a radius of 4

Graph the equation by plotting point x=2

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section