Question

The area of a square field is 48400m2. if a man runs around the field in 5 minutes, how many kilometres per hour does he Run? Ans : 10.56 km/hr

Answer 1

Answer:

Area of square = side^2 = 48400 sq m

side = _/48400

side = 220 m

Perimeter of square = 4 × side = 4 × 220

P = 880 m = 880/1000 km

P = 0.88 km

Time taken = 5 minutes = 5/60 s

T = 1/12 h

Speed = Distance/Time = 0.88/1/12

= 264/25

= 10.56 km/h

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