A contractor needs to cut a piece of glass to fit a square window. The area of the window is 12ft2. Find the length of the side of the window to the nearest tenth of a foot.
If the area is 12 ft2 , the side is just the square root of this.
So
√12 =
√(4 * 3) =
2√3 = about 3.5 ft. (rounded)
