Answer:
what is the question you are talking about ?
Answer:
7*1/7=1
Step-by-step explanation:
Well if you know how to find the area and perimeters of the shapes, you would get a ratio like this. (Note: This is not one of them in the picture.) Ex. Is the picture above.
I hope this helped you.

Thickness of the book is ~
Refer to the attachment for solution ~
Since it has been split up into triangles we know that 60 and 25 are two angles of each triangle.
add
180 - 85 = 95 degrees ust