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Answer:
B) 49.75m^2
Step-by-step explanation:
Area of vertical column = 0.5*40 = 20m^2
Area of horizontal column = 0.5*60 = 30m^2
Area of the common square in the centre = 0.5*0.5 = 0.25m^2
Therefore, area of the shaded part =
vertical column area + horizontal column area - common square
= 20 + 30 - 0.25
= 49.75m^2