(AMC8, 2000) The area of rectangle ABCD is 72. If point A and the midpoints of BC and CD are joined to form triangle, the area of that triangle is: A: 21, B: 27, C: 30, D: 36, E: 40

Its a multiple choice question

)a smart phone has dimensions of 4.9 inches (height), 2.3 inches (width) and 8.0 millimeters (depth). what is the volume of the smart phone in cubic centimeters? (1 in = 2.54 cm)

The vertices of a rectangle are given in the columns of the matrix . if is found to perform a transformation, what are the coordinates of the transformed rectangle? (0, 0), (0, –3), (–3, –3), (–3, 0) (0, 0), (0, 3), (3, 3), (3, 0) (0, 0), (0, 3), (–3, –3), (–3, 0) (0, 0), (0, 3), (–3, 3), (–3, 0)

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.