It is already in decimal form.
20.000 centimeters
0.86
4.06
43.9
Expressed as a decimal, 86/1000 is equal to 0.086.
86 = eighty-six
20.000 centimeters
0.86
8.6 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. And, since it is a decimal fraction, there is not another simpler decimal form. Its equivalent, in rational form, is 86/10 = 43/5.
35 centimeters is 35/100 of a meter. 35/100 in decimal form is 0.35, and as a fraction in simplest form is 7/20.
86 centimeters=860 millimeters
43.9
4.06
5,600.000... (as many zeros as you want to write)
1.43 m
86 square meters = 860,000 square centimeters
86 percent of what?