A) \[88{{m}^{2}}\]
B) \[60{{m}^{2}}\]
C) \[84{{m}^{2}}\]
D) \[180{{m}^{2}}\]
Correct Answer: D
Solution :
No. of shaded boxes = 28, No. of unshaded boxes = 60 Area of 1 unshaded box \[=3{{m}^{2}}\] So, area of unshaded region = \[60\times 3=180{{m}^{2}}.\]
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