Kim is reading a book with 380 pages. She read 20 pages each day until she reached Part 2 of the book. Part 2 of the book is 160
2 answers:
Answer:
It take 11 days to read the first part of the book.
Step-by-step explanation:
As I can see the book has two parts, the total of the book is 380 pages and the second part is 160, so the pages of the first part of the book will be:
From this we can see, that the first part will take:
The first part will take 11 days.
Now from the equation proposed in the argument, we can see that we can calculate also the days that the first part took:
Clearing it:
It take 11 days to read the first part of the book.
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First of all, a bit of theory: since the area of a square is given by
where s is the length of the square. So, if we invert this function we have
.
Moreover, the diagonal of a square cuts the square in two isosceles right triangles, whose legs are the sides, so the diagonal is the hypothenuse and it can be found by
So, the diagonal is the side length, multiplied by the square root of 2.
With that being said, your function could be something like this:
double diagonalFromArea(double area) {
double side = Math.sqrt(area);
double diagonal = side * Math.sqrt(2);
return diagonal;
}