1 meters = 100 centimeters
2 meters = 200 centimeters
3 meters = 300 centimeters
.
.
.
15 meters = 1,500 centimeters
There you have 15 meters converted to centimeters. But I doubt that
there's a swimming pool anywhere that's 15 meters deep at either end.
15 meters is a smidgen more than 49 feet. That's like eight 6-ft people
all standing on shoulders to reach from the bottom to the surface. It's
dangerous, and it's a huge expense for heating and chlorine tablets, for
so much water in which hardly anybody will ever go halfway to the bottom.
But the math is bullet proof and air tight.