Can someone please help me?? I’m not sure what the answer is.

Consider circle h with a 3 centimeter radius. if the length of minor arc what is the measure of zrst?

Recall that two angles are complementary if the sum of their measures is? 90°. find the measures of two complementary angles if one angle is twenty dash nine times the other angle.

Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?