Area and circumference of circles challenge

Problem

A python curls up to touch the tip of its own tail with its nose, forming the shape of a circle. The python is 2, point, 6, pi meters long.
What is the radius r of the circle that the python forms?
r, equals
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0, point, 75
  • a proper fraction, like 1, slash, 2 or 6, slash, 10
  • an improper fraction, like 10, slash, 7 or 14, slash, 8
  • a mixed number, like 1, space, 3, slash, 4
space, m
Do 7 problems