I would guess that it is around 80cm. which is 8dm. Centimetres are used a lot so it is probably the best to use.
cm
It depends on whether you are measuring the thickness of the board (5 mm) or length (5 dm).
1 cm = 10 mm = 0.01 m = 0.1 dm 1 mm = 0.1 cm = 0.001 m = 0.01 dm 1 m = 100 cm = 1000 mm = 10 dm 1 dm = 10 cm = 100 mm = 0.1 m
1 dm = 10 cm 0.9 dm = 9 cm = 90 mm
1 dm is equal to 100 mm (as 1 dm = 10 cm 1 cm = 10 mm)
They measure distance.
The height of a human is usually measured in cm.
The two conversions you need will be - 1 dm (decimeter) = 10 cm (centimeter) 1 cm (centimeter) = 10 mm (millimeter) First, we will convert 2.99 dm to cm. 2.99 dm x 10 cm/dm = 29.9 cm Now, we will convert 29.9 cm to mm. 29.9 cm x 10 mm/cm = 299 mm So, 2.99 dm = 299 mm
1 dm = 10 cm, 10 cm = 100 mm, so 1 dm = 100 mm and 0.35 dm = 35 mm
17 mm = 1.7 cm = 0.17 dm
32.5 dm = 325 cm = 3250 mm
600 mm = 60 cm = 6 dm