What about 2.19 how do you spell it

From my experience, in primary school they say: "two and nineteen hundredths," but when you get into secondary, and senior secondary school, they simply say "two point nineteen."

Step-by-step explanation:

[look above]

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.