In the given figure three squares a, b and c of side 3, 5 and 8 units are placed adjacent each other. Find the area of the shaded region.
Options:
A .  12.75
B .  13.75
C .  10
D .  15
E .  none of these
Answer: Option B : B Option(b) Let x and y be the bases of smallest two triangles. (y8)=(816); y=4. (xy)=(x4)=(38); x=1.5. Thus area of shaded region: 12 ((4*8)-(1.5*3))=13.75
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