Solve the problems and show illustration/drawings. 1. Find the coordinates of the point/s on the curvey=22 which are closest to the point ( 9, 0 ). 2. A closed box, with a rectangular base,whose length is twice its width, is to have a surface of 192 sq. in. Find the dimensions of the box when its volume is a maximum. 3. Find the maximum area of an isosceles triangle whose perimeter is 18inches