The answer depends on the units used for 8.23 : clearly the answer will be very different depending on whether you means 8.23 feet, 8.23 micrometres, or 8.23 kilometres, or any other unit for measuring distance.
5.56 rounded to the nearest whole metre is 6.
109 yards (rounded to nearest whole yard).
823 becomes 800 when rounded to the nearest hundred.
800
477000000
1
4 metres
7.3km to the nearest meter is 7km
61426.1 to the nearest meter is 61426m
4363m to the nearest tenth of a meter is 4363.0m
If you mean 8.60m, then rounded to the nearest meter would be 9m.
the nearest 3.80 or 380cm