(circles have radii of r, 2r, and 3r)
Not really any trick today, just some basic application of formulae.
Previous iteration: #699554
Yellow area | Total area - ⅔ of the Total area - ⅓ of Total area of second circle |
π.9r² - π.6r² - π. 4/3.r² | |
(9 - 6 - 4/3) π.r² | |
5/3.π.r² |