To round off to 10, the difference should range from 5 to 14. If the difference between two numbers is from 5 to 14, they all are rounded to 10.
Example:
(near to 10)



<span>625/1000 is your answer
</span>
<span>The radius of the circle is __17___ units.
(Enter a whole number, not decimals)
The point, (-15, _-16_ ) lies on it's circle. </span>
If my calculations aren't off, it is approximately 80.43.
Hope this helps with the answer ;)