<span>First of all, we need to put commas in the number so it would look less confusing
309 , 099 , 990
Hundred million hundred of thousnd Hundred
So the correct way to say it would be : three hundred nine million ninety nine thousand nine hundred and ninetyHope this helps. Let me know if you need additional help!</span>
The formula for an area of a circle is A= pi(r)^2
so if you plug in 5 to r (because it’s the radius) you should get A= 78.5
By adding/ subtraction systems