Math, asked by aditi3591, 11 months ago

why is 2πr not irrational ?explain
best answer will be marked brainliest

Answers

Answered by gghg1811p2jn4e

This statement is sometimes true.

If the radius is rational, the circumference is irrational, because it is a rational multiple of π.

If the radius is itself a multiple of 1/pi

, the circumference can be rational.

For example, if

r = 4/pi

, then

C = 2πr = 2π ×4/pi

C = 8

AryanTennyson: it's wrong

AryanTennyson: if 8 comes as a result then it's rational

gghg1811p2jn4e: that what the question is

AryanTennyson: yes it's correct

Answered by AryanTennyson

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Attachments:

Anonymous: If r is irrational say r=√5 .Then 2πr=2*22/7*√5=44√5/7 = a irrational number

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