What is the area of a circle whose radius is 10 meters?

a: 20 pi
b: 25 pi
c: 100 pi
d: 400 pi

If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 4 on at least one die?

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Which of the following expressions is equal to 2x^2+8