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A man walking at 3 km/hour crosses a square field diagonally in 2 minutes. The area of the field (in square metre) is
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- 3000
- 5000
- 6000
- 2500
Correct Option: B
Speed of person = 3 kmph
| = |  |  | m./min. | |
| 60 |
= 50 m./min.
∴ Length of the diagonal of square field
= 50 × 2 = 100 metre
| ∴ Required time = | × (100)2 | |
| 2 |
= 5000 sq. metre
