a book is 240 mm in width. What is this width in centimeters? in meters?

240 mm/10 = 24 cm.

240 mm/1000 = 0.240 m.

To convert the width of the book from millimeters (mm) to centimeters (cm), you can use the conversion factor that 1 centimeter is equal to 10 millimeters.

So, to convert 240 mm to cm:

240 mm x (1 cm / 10 mm) = 24 cm

Therefore, the width of the book is 24 centimeters.

To convert the width of the book from millimeters (mm) to meters (m), you can use the conversion factor that 1 meter is equal to 1000 millimeters.

So, to convert 240 mm to m:

240 mm x (1 m / 1000 mm) = 0.24 m

Therefore, the width of the book is 0.24 meters.