Please help with practice example problems 1 and 2.

1) Using polar coordinates, describe the level curves of the function dened by f (m) : ($332, if (m) a (o, 0) and f (o, 0) : 0. 2) A point on a rolling circle of radius R traces out a cycloid, which can be parameterized by CH) = (Rt Rsin t, R Recs 1'). One arch of the cycloid is completed from t = 0 to t = 211'. Show that the length of this arch is always four times the diameter of the rolling circle