Train A takes \(1\dfrac{4}{5}\) h more than the time taken by train B to cover a distance of 360 km. If the speed of train A doubles, it will take 36 min less than the time taken by train B to travel the same distance. What is the speed (in km/h) of train B?
A straight vertical pole was broken during a cyclone in such a way that its top touched the ground at a distance of \(6\sqrt{3}\) m from the bottom of the pole and made an angle of 30° with the horizontal. What was the height (in m) of the pole?
A person moved from place A for place B at 2 p.m. at a speed of 4.5 km/h, stayed at place B for 1.5 hours and returned to place A at a speed of 6 km/h. He came back to place A at 7 p.m. What is the distance between places A and B (in km)?
A bicycle wheel has a radius of 42 cm. It makes 40 revolutions in 25 seconds. What is its speed (in km/h, up to one decimal place)?