During a senate campaign, a volunteer passed out a "vote for shaw" button. according to the catalog from which the button was ordered, it has an area of 78.5 square centimeters. what is the button's radius?

use 3.14 for pi .

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