approximate square root -72 to the nearest integer and approximate square root 150 to the nearest integer?

Ineed in figuring out this problem.

Which of the following shows the length of the third side, in inches, of the triangle below

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.