<span>The book has sold 442,696 copies to date.
This was calculated by making a proportion: 8.9 : 39,400 = 100 : X where X Is the number of copies sold.
Then I calculated 39,400*100/8.9 to obtain the answer</span>
The answer is 45 because if you solve what you get
<h3>perimetr:216</h3><h3>area:60 </h3>