Removing the down side of rectangle when the swirl is above it?

Question

I have created a rectangle of blue color in illustrator and then have make a swirl(yellow) using pen tool by giving it stroke. Now i want to remove the blue part of rectangle down under swirl in easy way.

Answer 1

• Select the yellow path with the Selection Tool (Black arrow)
• Edit > Copy (Command + C)
• Edit > Paste In Front (Command + F)
• Object > Path > Join (Command + J) [ You may need to add an anchor and move a portion of the yellow to fully encompass that area of blue. ]
• Swap the stoke and fill color on the pasted copy so it has a yellow fill and no stroke (Shift + X)
• Select the blue rectangle and this new yellow shape with the Selection Tool (black arrow)
• Pathfinder Panel > Minus Front (top row, second button from the left)

• Move blue rectangle backwards (Command + Shift + [)

• Done! :)

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Second method:

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• Select > Select All (Command + A)
• Grab the Shape Builder tool in the Tool Bar
• Hold Down the Option/Alt key and click the area you want to remove.
• Done! :)