How do you find the square root of 3.24? Algebra Radicals and Geometry Connections Simplification of Radical Expressions 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#. Answer link Related questions How do you simplify radical expressions? How do you simplify radical expressions with fractions? How do you simplify radical expressions with variables? What are radical expressions? How do you simplify #root{3}{-125}#? How do you write # ""^4sqrt(zw)# as a rational exponent? How do you simplify # ""^5sqrt(96)# How do you write # ""^9sqrt(y^3)# as a rational exponent? How do you simplify #sqrt(75a^12b^3c^5)#? How do you simplify #sqrt(50)-sqrt(2)#? See all questions in Simplification of Radical Expressions Impact of this question 20665 views around the world You can reuse this answer Creative Commons License