Kira unravels a shirt to get blue thread. From each centimeterof the shirt, Kira gets 231\,\text{cm}231cm231, start text, c, m, end text of thread. She unravels 7\,\text{cm}7cm7, start text, c, m, end text of the shirt.

The perimeter of a rectangular lot of land is 436 ft. this includes an easement of x feet of uniform width inside the lot on which no building can be done. if the buildable area is 122 ft by 60 ft, determine the width of the easement. select one: a. 9 feet b. 18 feet c. 4.5 feet d. 7 feet