The above figure ABCD is a trapezium where AB // CD.
r + s + t = ?
(A) 180
(B) 135
(C) 145
(D) 190
(E) 200
In the figure shown above LM is the diameter
of the circle with a center O. Two circles with centers P and
Q are drawn with diameters LO and OM respectively. Find the area
of the shaded region.
(A) p r2/2
(B) 2p r2
(C) p r2/4
(D) p r2/8
(E) p r2/16
