Ravi goes once round a circular track of diameter 135 metres in 5 minutes. Find his speed
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Answer:
1.4 km (approx)
Step-by-step explanation:
d = 135m
=> r = 135/2 m
therefore circumference of the circle = 2 x 22/7 x 135/2
= 2 x 11/7 x 135
= 2970/7 = 424.2857142857143m
time = 5 mins = 5x60 = 300s
therefore speed = d/t = 424.2857142857143/300 = 1.414285714285714
= 1.4 km/h (approx)
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