A ring of grass with an area of 314 yd squared surrounds a circular flower bed. Find the width x of the ring of grass.

1. A ring of grass with an area of 314 yd squared surrounds a circular flower bed. Find the width x of the ring of grass.

The radius of the circular flower bed = 10 yd.

2. Harriet has 80 m of fencing materials to enclose three sides of a rectangular garden. She will use the side of her garage as a border for the fourth side. Find the width x of the garden if its area is to be 700 m squared.

3. Sid cuts four congruent squares from the corners of a 30-in.-by-50-in. rectangular piece of cardboard so that it can be folded to make a box. Find the side length s of the squares, given that teh area of the bottom of the box is 200 in squared.