Robert is completing a construction of a square inscribed in a circle, as shown below. what should be the next step in his construction?
construct a perpendicular bisector to line ab.
place his compass on the radius and draw two arcs above and below line ab.
make another circle from point b with the same radius as his original circle.
draw a line parallel to line ab that touches the circle at point a.

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?