What is the total surface area of the figure below

For how answer my question this will be the last question can you answer in math subject

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20