The diameter of the wheel of a unicycle is 0.9m. Paul tries to ride the unicycle and manages to go in a straight line for 15 full revolutions before falling off. How far did Paul manage to cycle in metres? Give your answer rounded to 1 DP.

In a quadratic function of the form ax^2+bx+c, which of the following is not true? a. the y-intercept is c. b. if a is positive, the parabola opens up. c. the vertex has an x-coordinate of -b/2a. d. the axis of symmetry is the line y=-b/2a.