The reddish-orange colour of weathering of volcanic ash is most likely due to its iron sulfide content which oxidizes to iron oxide so that limonite is yellow and hematite is red and in ash since it is such fine grained material it weathers more rapidly because it has a large surface area.
distance and angle such that points equally distant from a fixed. point lie on a line and lines making a given angle with a fixed line pass. through a point. On account of this property we have called this. distance linear.
