How do you find the square root of 3.24?

1 Answer
Truong-Son N.
Sep 14, 2015

Notice how #324# is a perfect square. #sqrt(324) = pm18#. Therefore...

#sqrt(3.24) = sqrt(324/100) = sqrt(324)/(sqrt(100))= pm18/10 = color(blue)(pm1.8)#

You can check by determining that #sqrt(3) = 1.732# and #sqrt(4) = 2#, and #1.8# is between them, while being closer to #1.732#, corresponding to #3.24# being closer to #3# than to #4#.

Related questions
See all questions in Simplification of Radical Expressions
Impact of this question
21458 views around the world
You can reuse this answer
Creative Commons License