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Question 1:
A man walking at the rate of 6km per hour crosses a square field diagonally in 9 seconds the area of the field is
A. 110 sq.m
B. 111.5 sq.m
C. 112.5 sq.m
Feedback Distance covered in 9 seconds = (6×1000/3600)×9 = 15m
Diagonal of square field = 15m
Side of square =a then diagonal of that square= Root of 2 a
Hence area of the square = a^2= (15^2)/2 =112.5 sq.m
D. 114 sq.m

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