In C++

Task A. Length and distance in 3D space A point in 3D space can be represented using three coordinates. In Cartesian coordinate system these coordinates are called (xy,z), describing the position of the point along the three orthogonal axes 0-(0,0,0) The origin of the coordinate system is denoted by O and has coordinates (0,0,0). A point P-(x,y,z), together with the origin, defines a 3D vector OP. The distance from O to P, or in other words, the length of the vector OP can be computed using the euclidean distance formula: Length of the vector OP /x2 + y2 + z2 We are provided with a class type that represents coordinates in 3D: class Coord3D public: double x; double y; double z