A park is 1500 m long and 750 m wide. A
cyclist has to take four rounds of this park.
How much time will he take at the speed of
4.5 km/h?
Answers
Solution -
According to the given question , the park is 1500m long and 750 m wide . Let us find the perimeter of the park first.
Perimeter of the park :
> 2 [ Length + Breadth ]
> 2 [ 1500 + 750 ]
> 2 [ 2250 ]
> 4500 m or 4.5 km .
Thus the perimeter of park is 4.5 km . Now the cyclist is taking 4 rounds of the park and he is moving at a speed of 4.5 km/hr .
He can cover the entire park in 1 hour at the present rate. To cover 4 rounds , he will take 4 hours . This is the required answer.
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Answer:
4 hours
Explanation:
Length of park =1500m
Breadth of park =750m
Perimeter of park = 2(l+b)
=2(1500+750)
=2×2250
=4500m
Distance covered by cyclist = 4×4500=18000
m= 18km
Speed = distance/ time
Time = 18/4.5=4 hours
Hence, the time taken is 4 hours.