Can someone please help me on this

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

In the triangles, bc =de and ac fe.if the mzc is greater than the mze, then ab isdfelth

How are sas and sss used to show that two triangles are congruent?