Please answer the question ASAP I found out the area of the square I just don't know the formula for the half circle.

Which value is not a solution of 8x^3 – 1 = 0

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

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?