2.
Find the area of the shaded region. Express your answer in terms of
3 in
6 in
9 in
0
12 in
18 in

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?

Anyone know? will mark brainliest if you're correct!

Fast! find the length of cu. the triangles are similar. show your work.