The given figure (not drawn to scale) shows a semi-circle centred at O and a rectangle. Find the total area of shaded parts.
The total weight of Ajay, Nihal and Varun is 415.6 kg.
Ajay is 9.8 kg heavier than Varun. Varun is 12.2 kg lighter than Nihal. What is the weight of Ajay?
A 128 kg
B 131 kg
C 120 kg
D 141 kg