# Multiple Semi-Circles II +-- {.image} [[MultipleSemiCirclesII.png:pic]] > Is more of this design red or yellow? =-- ## Solution by [[Lune]] +-- {.image} [[MultipleSemiCirclesIILabelled.png:pic]] =-- Using the calculation of the area of a semi-circular [[lune]], the area of region $A$ is equal to the area of the union of regions $B$ and $C$. Similarly, the area of region $D$ is equal to the area of the union of regions $E$, $B$, and $C$, $F$. Therefore, the yellow and red regions have the same area.