Please help me out I am not very good at math or graphs.

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°