Question

I need help with the question in the picture please.

Answer 1

The rational number is the number you can write it in the form of the fraction

Ex: 1 , 5, 22/50, 1.25, 23.5468, square root 16, ........

The irrational number is the number you can not write it in the form of the fraction

Ex:

`\sqrt[]{5},\sqrt[3]{24},\text{ }\pi,\text{ }`

or any approximated value

So in the question, the equation is

`(6)(3\pi)=18\pi`

6 is a rational number

3pi is an irrational number

rational * irrational = irrational

So the right answer is (B)