David wrote on a test that an approximate value for the following non-perfect square root: \sqrt{140}=10.7
140

=10.7
Explain how you can determine David's answer is incorrect without using a calculator.

step-by-step explanation:

dc=6 square root of 3 and ac is 12 square root 3

c and d

step-by-step explanation:

square root of 3/2 = 18/c

cross multiply to get 18*2=√3*c

36/√3 * √3/√3 = c

c= 36*√3/3

c=12√3

my guess would be b and d, but i didn’t actually get out the pen and paper. lol