Assertion: curve's length | /r/HasProperty | calculated
Facets:
value: from f
type: OTHER
Source sentences:
text: If a point X is located on a parabola with focal length f, and if p is the perpendicular distance from X to the axis of symmetry of the parabola, then the lengths of arcs of the parabola that terminate at X can be calculated from f and p as follows, assuming they are all expressed in the same units.[g]