MMCMLXII WHAT NUMBER DOES THIS ROMAN NUMERAL REPRESENT?

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

Right triangle xyz has a right angle at vertex y and a hypotenuse that measures 24 cm. angle zxy measures 70º. what is the length of line segment xy? round to the nearest tenth. 8.2 cm 8.7 cm 22.6 m 25.5 cm

In the diagram of circle o, what is the measure of zabc?