An enginner places his transit along the line tangent to the circle at point A such that PA = 200 m. He locates another point B on the circle and finds PB = 80 m. If a third portion C, on the circle lies along PB, how far from point B will it be?

Two-dimensional figure measured in terms of radius. It is formed by a set of points that are at a constant or fixed distance from a fixed point in the center of the plane. The parts of the circle are circumference, radius, diameter, chord, tangent, secant, arc of a circle, and segment in a circle.