PLZZZ NO ONE IS HELPIN MEE AN I RLYYY NEED THIS 30 PTS +BRAINLIESTT PLzZ GUYSSS

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Apark is in the shape of a rectangle. the park authorities are planning to build a 2-meter-wide jogging path in the park (shown as the shaded region in the image). what is the area of the jogging path? plz

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?