Question

which one of the following is an irational number
a) √81
b) -√0.25
c)√4
d) 4√8​

Answer 1

Answer:

sorry I didn't know that ans

........ I'm not sure

Answer 2

Answer:

$4 \sqrt{8}$

is the irrational number.

Step-by-step explanation:

$\sqrt{81} = 9$

$- \sqrt{0.25} = - 0.5$

$\sqrt{4} = 2$

Hope it helps you out...