A car moving at 72 km/h climbs a gradient of 1 in 10 (sin θ = 0.1, take cos θ ≈ 1). The driver’s reaction time is 0.75 s and the coefficient of adhesion between tyres and road is 0.5 (g = 9.81 m/s^{2}). If all wheels are braked to the limit of adhesion, the total stopping distance is about