Question

if a pile of 10 books is 9cm high. then what will be the thickness of one book in mm?​

Answer 1

Answer:

9 mm

Step-by-step explanation:

1cm = 10mm

9cm = 90mm

90/10

9mm

Answer 2

Given:

A pile of 10 books is 9cm high.

To find:

What will be the thickness of one book in mm.

Solution:

• To convert cm to mm we should multiply the cm with 10.

$9 cm =9*10=90mm$.(thickness of 10 books).

• Now 1 book thickness = $\frac{90}{10}$

So the thickness of one book is 9mm.