A car of mass M = 1100 kg traveling at 65.0 km/hour enters a banked turn covered with ice. The road is banked at an angle , and there is no friction between the road and the car's tires. Use g = 9.80 m/s^2 throughout this problem.

What is the radius r of the turn if = 20.0 (assuming the car continues in uniform circular motion around the turn)?