Can somebody me? i'm having trouble

Which problems? you can easily find formulas on the internet for the area of some of those shapes. 

To answer the composite figure divide the figures out ( what I mean to say is for the fourth question divide the figure by rectangle and triangle and then find the area of each figure and then add them both up and thats how u get the area of the composite figure) I hope its well

The length is 23 and y because you add them together