Question

What number can you multiply by π to get a rational number?

Answer 1

1$\pi$ and 0

Answer 2

Solution:

0 is the correct option.

Explanation:

We have been given the number  π, which is an irrational number. The value of  π is 3.14

Now, let us multiply the number  π with the given numbers in option and see what type of number we get.

$0\times \pi = 0\\\\1\pi \times \pi = \pi^2\\\\-\pi \times \pi = -\pi^2\\\\2\times \pi = 2\pi$

Among all the above result, only 0 is a ration number.

Hence, when we multiply 0 with  π then the result will be a rational number.