Question

a circle with radius 2 units is intersected by a line at points R and T. The maximum possible distance between R and T is
a) 1 unit
b) 2×22/7unit
c) 4×22/7unit
d) 4unit
please give answer with explanation or using figure

Answer 1

RT is a chord. The largest possible chord in a circle is its diameter.
diameter = 2*radius.
that is 4 units

Answer 2

The radius of the circle
The line joining R and T must be a chord
The largest chord to a circle is it`s diameter
That is the maximum possible distance between R and T is it`s diameter = 2×2
 =4 units