Given that the segment Mn = 4cm, point P is the golden section point, find the length of the longer segment MP

Given that the segment Mn = 4cm, point P is the golden section point, find the length of the longer segment MP

Because point P is the golden section point and the longer line segment is MP, so MP divided by Mn is equal to < 5-1 > 2, and because Mn is equal to 4, so MP is equal to 2 ×√ 5-2