Shantanu started cycling along the boundaries of a square field ABCD from corner point A. After 1/2 h, he reached the corner point C, diagonally opposite to point A. If his speed was 16 km/h. Find the area of the field?

8 sq km
9 sq km
19 sq km
None of the above

Correct Answer: None of the above

Explanation:

Distance = (AB + BC) = 2L = 16 x 1/2 = 8 km
∴ L = 8/2 = 4 km
∴ Area of the field = 4 x 4 = 16 sq km.

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