In the figure below, circle B lies inside circle A. The radius of circle A is 10 and the radius of circle B is 4. What is the area of the shaded region?

How to write 3 tenths and 5 tenths as a decimal

Cal's go cart has a gas tank with the dimensions shown below. he uses a gas can that holds 11 gallon of gas, to fill the go cart tank. 11 gallon = 231 inches^3 how many full gas cans will it take to fill the go cart's gas tank?

Which of the following would be a reasonable estimate for the weight of a pencil? a. 1 × 10^-20 lb b. 1 × 10^20 lb c. 1 × 10^2 lb d. 1 × 10^-2 lb