What is the square root of 1.8?

1 Answer
Mar 30, 2018

Answer:

#(3*sqrt(5))/5#

Explanation:

1) Put it in fractions
#1.8 = 9/5#

2) Square root the fraction
#sqrt(9/5)#

3) Take out the perfect square
#3/sqrt(5)#

4) Rationalise
#3/sqrt(5)*sqrt(5)/sqrt(5) = (3*sqrt(5))/5#