bicycle has a chain that connects a chain ring of radius 6 in. with a cog of radius 2 in. as shown to the right. If the chain ring rotates through an angle of 20degrees, then through how many degrees does the cog rotate?

A)a square brown tarp has a square green patch green in the corner the side length of the tarp is (x + 8) and the side length of the patch is x what is the area of the brown part of the tarpb)a square red placemat has a gold square in the corner the side length of the gold square is (x - 2) inches with the width of the red region is 4 in what is the area of the red part of the placemat