question_answer

The area of isosceles trapezium is \[176\,c{{m}^{2}}\] and the height is \[\frac{2}{11}th\] of the sum of its parallel sides. If the ratio of the length of the parallel sides is 4 : 7, then the length of a diagonal (in cm) is

A)  \[2\,\sqrt{137}\]

B)  \[\sqrt{137}\]

C)  24                               

D)  28

E)  None of these