Can someone help answer this? i’ll mark brainliest :)

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

If angle b measures 25°, what is the approximate perimeter of the triangle below? 10.3 units 11.8 units 22.1 units 25.2 units

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b. false