Find the distance between the pair of points. (12,16) and (- 212,416) The distance is units. (Type an exact answer, using radicals as needed. Simplify your answer.)5 The grade of a highway is its slope expressed as a percent (a 5% grade means the slope Is ;). If the grade of a certain highway is 3%, find (a) its angle of inclination and (b) the change in elevation (in ft) of a car driving for 5.00 mi uphill along this highway (1 mi = 5280 ft). (a) The angle of inclination is (Round to the nearest hundredth as needed.)