What are similarities between rational and irrational numbers?

- Key Differences Between Rational and Irrational Numbers. ... An irrational number is a number which cannot be expressed in a ratio of two integers. In rational numbers, both numerator and denominator are whole numbers, where the denominator is not equal to zero. While anirrational number cannot be written in a fraction.

They are both numbers and they can both be decimals. 

Its equal to d=7.07in

Hope this ; )