Since it took 6 days to read 8/9 of the book, then just divide 8/9 by 6. Taking an extra step, multiply the numerator and denominator by 6 which gets you 48/54. Now you can divide 48 by 6 which is 8. Your answer would be 8/54 so just simplify that and you will get 4/27.
*You can easily check your answer by multiplying it by 6.* (4/27) × 6 = 24/27 ⇒ 8/9
<span>64π</span><span> is correct, since the </span>area<span> of the white </span>circle<span> is 36</span>π, and 100π<span> - 36</span>π<span> = 64</span>π<span>.</span>
