Answer:The height of one book is

in
Explanation:We know that the 3 books are of the same size. This means that the 3 books have the same height.
Assume that each book has a height x in
Now, we know that the total height is 10 in.
Therefore:
x + x + x = 10
3x = 10
x = 10/3 in
Based on the above, the height of one book is 10/3 in
Hope this helps :)
Answer:
D 11.61
Step-by-step explanation:
Arc length is

r=5 and angle measure is 133

4×11+1=45
A+B+C=180 60+75+C=180 180_130=c c=45