Communities A, B and c are faceed with acute water problems. The distance between communities A and B is 5km and that of A and C is 7km. The angle between path AB is 45 degree. If a well is to be dug for the communities such that it would have equal distance to the paths linking each community.(a) indicate by way of sketching the exact place to dig the well .(b) measure the distance between the communities A and B.