A square barn measures 42 feet on each side. A goat is tethered outside by a rope that is attached to one corner of the barn, as shown in the bird's eye sketch. a. suppose the length of the rope is 28 feet. How many square feet of land is the goat able to gaze

b. suppose the length of the rope is made twice as long as in part a. How many square feet of land is the goat now able go gaze

(answer both questions, not just one )
Here's an image that would help