Let R be the circle centered at (0,0) with radius 10. The lines x = 6 and y = 4 divide R into four regions R_{1}, R_{2}, R_{3}, and R_{4}. Let [R_{i}] denote the area of region R_{i}. If

**[R _{1}] > [R_{2}] > [R_{3}] > [R_{4}]**,

then find [R_{1}] - [R_{2}] - [R_{3}] + [R_{4}]

choutowne Aug 10, 2023