Question

A man runs around exact half the circumference of a circular park of diameter 40 m.
What is the displacement of the man?

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Answer 1

Answer:

62.8m

Step-by-step explanation:

Displacement is the change in the position of an object.

He ran exactly half the circumference of the park.

Let's see :-

Given,

• Diameter,d of the park = 40m

To find,

• Circumference of the park = ?
• Displacement of the man = ?

We know,

• Radius = d/2
• Circumference = 2πr

Now,let's find radius first then the circumference :

1)

• r = d/2
• r = 40/2
• r = 20m

2)

• c = 2πr
• c = 2 x 22/7 x 20
• c = 125.6m

Now,the distance covered by man :-

It is given that he ran around the circumference exactly half of it. So,

• d = 125.6/2
• d = 62.8m

Hence,he covered 62.8m

Hope it helps