Question
Download Solution PDFHow long will a man take to walk around the boundary of a square field of area 25 hectares at the rate of 5 km/hr ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFFormula used:
Area = (side)2
Perimeter of the square field = 4 × sides
Time = Distance/Speed
Calculation:
The area of the field is 25 hectares (250,000 m2).
For a square,
Araa = (side)2
Side length = √area = √250,000 m = 500 m.
Perimeter of the square field = 4 × sides
Perimeter of the square field = 4 × 500 m = 2000 m.
Walking speed is 5 km/hr = 5000 m/hr.
Time to walk the perimeter = Distance/Speed
⇒ 2000 m / 5000 m/hr = 0.4 hr
But 1 hr = 60 min
Therefore,
Time to walk the perimeter = 60 × 0.4 = 24 minutes.
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