why are they the same
Yes
Yes
There are 10 millimetres in one centimetre. Therefore, 81 centimetres is equal to 81 x 10 = 810 millimetres.
The LCM is 810.
81
Yes: 810 / 10 = 81
It is: 81*10 = 810
8.1 = 810%
9*9 = 81 81*10 = 810 so 9*90 = 810 and, therefore, 810/9 = 90
81
810
810 is the answer
sqrt(810) = sqrt(81*10) = sqrt(81)*sqrt(10) = 9*sqrt(10)
810