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1. A man walking at the speed of 4 km/hr,cross a square field diagonally in 3 minutes.The area of the field is?
= 4 kmph = m/sec
In 3 min (180 sec) man will go = = 200 m.
That means the diagonal of the square field = 200 m.
Diagonal of square,
= Side of Square × = 200 m.
→ Side of Square =
Area of Square = Side2
Area = = 20000 sqm.
Solution:
Speed of man, = 4 kmph = m/sec
In 3 min (180 sec) man will go = = 200 m.
That means the diagonal of the square field = 200 m.
Diagonal of square,
= Side of Square × = 200 m.
→ Side of Square =
Area of Square = Side2
Area = = 20000 sqm.