The Pyraminx is a Rubik's cube-type toy in the shape of a triangle-based pyramid. Every edge of the Pyraminx below is 15\,\text{cm}15cm15, start text, c, m, end text long. The pyramid's height is h=12.2\,\text{cm}h=12.2cmh, equals, 12, point, 2, start text, c, m, end text. The triangle drawn with dashed lines is a right triangle. Pyraminx toy Triangle-based pyramid with height labeled "h" and radius labeled "r" from the bottom of the height segment to one vertex of the base of the pyramid. The height and radius form a right angle. What is the radius rrr of the base of the pyramid? Round your answer to the nearest tenth of a centimeter.