Please Help me with this problem will give a brainist to whoever answers thx ❤

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

Find the distance from the theater to the library. leave your answer in simplest radical form if necessary. 12 √12 74 √74

Mr. vector door is buying two new cowboy hats all together the hats cost $75.12 the second heart cost twice as much as the first hat what is the price of the more expensive at round to the nearest hundredth