The area of a square field is 625 km2. How long will it take for a horse to run around at the speed of 25 km/h ? Answers
A) 12 h  B) 10 h  C) 8 h  D) 4 h  E) None of these
Explanation Area of field = 625 km2. Then, each side of field = √625=25km 4 histance covered by the horse = Perimeter of square field = 25 × 4 = 100 km ∴ Time taken by horse = distances/peed=100/25= 
<gadget id="calculator">100/25</gadget>
<output>4</output>
4h Answer 4 h
<result>D</result>
The area of a square field is 625 km2. How long will it take for a horse to run around at the speed of 25 km/h ?