5. A utility line runs underground through Shayne's rectangular backyard . Shayne is not allowed to dig within 3 feet of the utility line. The diagram below shows the dimensions of Shayne's backyard in feet. The dashed line represents the utility line -22 ft No digging No digging 17 ft - 3ft + 3ft + -14 What is the area in square feet of the part of the backyard in which Shayne is allowed to dig ?