Question

Is 1,815 a rational number?

Answer 1

The square root of 1815 is a rational number if 1815 is a perfect square. It is an irrational number if it is not a perfect square. Since 1815 is not a perfect square, it is an irrational number.

Explanation:

I comfirmed this, it’s most likely right! (;

Answer 2

If a number can be represented by a fraction, it is a rational number. So yes, 1815 is a rational number