Question

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

Answer 1

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

Answer 2

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