The model shows a total of 1 whole and 6 tenths. After regrouping 1 tenth into 10 hundredths, there is 1 whole, how many tenths, and how many hundredths. After crossing out 3 tenths and 2 hundredths, there is 1 whole, tenths, and hundredths remaining.

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