Guys pls help in solving 18. Question mentioned in the given image...
Q.18. In Fig. 4, ABCD is a trapezium with $AB\parallel DC and \angle BCD=30°$. If BGEC is a sector of a circle with centre C and AB = BC = 7 cm, DE = 4 cm and BF = 3.5 cm, then find the area of the shaded region (use $\pi =\frac{22}{7}$).