Multiple choice A triangle is inscribed in a circle. The vertices of the triangle divide the circle into three arcs of length 3, 4 and 5 units. Then area of the triangle is equal to

Multiple choice In △ABC , medians BE and CD are perpendicular to each other and intersect at Z . If BE = 8 cm, CD = 12 cm, what is the area of △ABC ?

Q&A D, E, F, G are midpoints of sides of square ABCD. Given the areas of the three quadrilaterals, what is the area of the shaded one?