All I know is that it has to do with rates of change

2. (6 marks) Two particles are initially at the point (0,0) (the origin) of a coordinate system. Particle A moves along the positive x-axis with a speed of 2 m/s. Particle B moves along the positive y-axis with a speed of 3 m/s. How fast is the distance between the two particles changing, when Particle A is 6 meters from the origin? Draw a diagram of the situation and label it. Answer with an exact value