Work out the surface area of this cylinder radius 2cm and height 4cm pls help​

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?

3382-299=3383- ? fill in the blank?

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read