A park is 1500 metres long and 750 metres
wide. A cyclist has to take four rounds of
this park. How much time he will take at the
speed of 4.5 km/h?
(A) 40 hours D B 20 hours
(C) 10 hours (D) 4 hours
Answers
Answer:
A park is 1500 metres long and 750 metres
wide. A cyclist has to take four rounds of
this park. he will take 4 hours to complete the four rounds.
Step-by-step explanation:
To answer this question, we must first calculate the perimeter of the park.
The park is in form of a rectangle.
Perimeter of the rectangle = (Length + Width)2
This equals to: (1500 + 750)2
= 2250 × 2 = 4500 m
The perimeter of the park is 4500 meters.
The Cyclist takes four rounds.
Four rounds is equivalent to; 4500 × 4 = 18000 meters
So, the cyclist covers a distance of 18000 meters.
Since the speed is given in km/h, we convert this distance to kilometers.
1km = 1000m
so we have: 18000/1000 = 18 km
Given speed and distance, the formula for getting time is:
Time = Distance/Speed
= 18/4.5 = 4 hours.
The cyclist takes 4 hours to complete this task
Explanation:-
DATA:
Length=1500m
Width=750m
Speed=4.5km/h
Time=t=?
SOL:-
The cyclist has to take 4 rounds and find out the time.
Perimeter= ( length + Width) x 2
Perimeter = (1500 + 750) x 2
Perimeter = 4500m
Total distance covered by the cyclist = 4500 x 4 = 18000m
Total distance in Km = 18000/1000 = 18.
So,
Time = Distance in Km / Speed.
Time = 18 / 4.5
Time = 4h .