Measuring and Irrational numbers

Try to find the following particular length of the figures; 1- Radius of the Circle with the center at C 2- Radius of the Circle with the center at B 3- KL side of the triangle KLM 4- Radius of the Circle with the center at A 5- EF side of the polygon EFDGH 6- PS diagonal of the square PRST

Measuring-2