Question

an athlete complete one round in a circular pathin 40sec what will be the distance at end 2min and 20s
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Answer 1

Answer

• Distance Covered will be 2310 m

Explanation

Correct Question

An athlete completes one round of a circular track of diameter 210m in 40sec. What will be distance and displacement at the end of 2min20 sec

Given

• Diameter of the circle = 210 m
• An athlete completes one round in 40 seconds
• He runs for 2 min 2 seconds

To Find

• Distance covered at the end of all his running?

Solution

[First convert the time to Seconds then calculate the circumference of the field and the number of rounds and their product will be our Answer]

✭ Total Time

➝ 1 min = 60 sec

➝ 2 min 20 sec = 2 × 60 +20

➝ 120+20

➝ Total Time = 140 seconds

✭ Total Number of rounds

➝ 1 Round = 40 sec

➝ For 140 sec = 140/40

➝ Number of round = 3.5

✭ Circumference of the path

➝ Circumference = 2πr

➝ Circumference = 2 × 22/7 × 210/2

➝ Circumference = 2 × 22/7 × 105

➝ Circumference = 2 × 22 × 15

➝ Circumference = 660 m

✭ Distance Covered

➝ Distance Covered = Number of round × Circumference

➝ Distance Covered = 3.5 × 660

➝ Distance Covered = 2310 m