The area of square park is 25 sq Km Time taken...

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The area of square park is 25 sq. Km. Time taken to complete a round of the field once, at a speed of 3 kmph is:

A. 4 hours 60 minutes

B. 4 hours 50 minutes

C. 6 hours 40 minutes

D. 5 hours 40 minutes

Answer: Option C

Solution(By Examveda Team)

Area of square = side × side= 25 sq. km.
Side = 5 km.
perimeter = 4 × 5 = 20 km.
Time taken to complete one round with speed 3 kmph,
= $$\frac{{20}}{3}$$
= 6.66 hours
= 6 hour 40 minutes

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