Answer:
A). RS,ST and SU
B). RU, UT and SU.
C). All radii are same in measure.
Explanation:
Radii of the circle S are RS, ST and SU.
RS = ST = SU
Similarly radii of the other circle U will be RU, UT and SU.
RU = UT = SU
Since side SU is common in both the circles S and U.
Therefore, all radii of both the circles will be equal in measure.