On a diagram of the arena, the car park's length is 15 cm. the scale is 1: 100.what is the actual length of the car park in metres

If a diagram has a scale of 1:100, that means that the real thing is 100 times larger. To find how long the real thing is, that means that we need to multiply the length on the diagram by 100. 100 * 15 is 1500. But, that is 1,500 cm. To convert it into meters, we need to divide by 100. That's because there's 100 centimeters in every meter. 1500/100 is 15, which means that the actual length of the car park is 15 meters.

if he is naked in public on purpose then yes. that is a crime and you should call the police as he could be a threat to females/ might flash.