Please help with math

Miguel’s teacher asks him to color 4/8 of his grid. he must use 3 colors: red, blue, and green. there must be more green sections than red sections. how can miguel color all the sections of his grid to follow all the rules

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

What is the sum of the first 8 terms of the geometric series