is a parallelogram where , the perimeter is 156 cm, the length of the small diagonal is 42 cm and . Find the area of the ABCD giving the answer to the nearest square centimeter.
is a circle with radius 24 cm. A chord is drawn whose central angle is . Find the length of the chord giving the answer to the nearest cm.
is a parallelogram where , and . Find the perimeter of giving the answer to two decimal places.