The digits 1, 2, 3, and 4 are used to make a 3-digit number. each digit can be repeated. what is the total number of 3-digit numbers that can be made using these digits?

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π