Question

A person moves in a circular path centered at O. He starts from A and reaches diametrically oppo
point B. Then distance A and B:
1m
A) 2m
(B) 4m
(C)piem
(D) 2pim
​

Answer 1

Explanation:

so according to figure

if he starts from A and stop at B

then he covered = πr + πr/4

= π(r+r/4)

=5πr/4

this is the total distance between a and b according to figure

but according to your question only it seems that person reaches at diametrically opposite of A means =

if r= 1m

πr = pi m

optionC is correct

displacement = 2m

distance = pi m

Answer 2

Answer:

Explanation: (c)

pi r cause circumference= 2pir its half pi r