Tres estudiantes a, b y c se sitúan en un campo de fútbol. entre a y b hay 25 metros y entre b y c, 12 metros. si el angulo en b es de 20°, calcular distancia entre a y c.

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