'has been rounded off' is correct and can be used in written English.
You can use it when you want to say that something has been finished or brought to a conclusion. For example: "The company's financial report for the year has been rounded off and is now ready to present."
Click HERE to view graphic (242k jpg) The slow but steady recolonisation of its former haunts has been rounded off with the reappearance of otters in Kent, the last county to have been without them, the agency said.
Watching the joggers and pedestrians along the edge of the F.D.R., I realized that every sharp edge in this city, every right angle, has been rounded off, metaphorically speaking, by the personal pathways we make among the buildings.
A team of 30 firefighters and police officers are helping to move the metals, a task that can be measured practically down to the flake but that has been rounded off at 379,036 ounces of gold and 29,942,619 ounces of silver.
Neville also won 85 England caps and his coaching education has been rounded off even further by his association with the national team, where he has been at Hodgson's side along with Ray Lewington since his appointment in 2012.
All data has been rounded off to 2 significant figures.
The value of the decrease in pain intensity has been rounded off to 55% and hence the value −0.379 was chosen as a cut-off point of TDC for deciding whether ULFS had been passed during treatment of the patients from the present study.
The numbers had been rounded off in the third decimal place.
All percentages have been rounded off to the nearest whole number.
(For those keeping score at home, all numbers have been rounded off for your convenience and our deniability).
In one meeting, when a lawmaker cited a budget figure that had been rounded off, Mr. Walcott repeated the figure to the decimal place.
Six victories in their last 11 matches, with just two defeats, have been rounded off by impressive successes against Shrewsbury (5-0) and Bury (2-1, away).
