Area of square park is 16m^2. A child cycle around its boundary at 16/km per hour it how much time its will return to stating point?
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Area of square = s² = 16 m²
s = 4 m
So the perimeter of square = 4s
= 4 × 4 = 16 m
So when he reaches the starting point he would have cover the perimeter of the square.
Speed = 16 km/h = 80/18 m/s = 40/9 m/s
Speed = Distance / Time
Time = Distance / Speed
Time = 16 / (40/9)
Time = (16×9) / 40
Time = 3.6 seconds
s = 4 m
So the perimeter of square = 4s
= 4 × 4 = 16 m
So when he reaches the starting point he would have cover the perimeter of the square.
Speed = 16 km/h = 80/18 m/s = 40/9 m/s
Speed = Distance / Time
Time = Distance / Speed
Time = 16 / (40/9)
Time = (16×9) / 40
Time = 3.6 seconds
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