square root of 19. its easy to everyone, but i still fail with it.

Question

anonymous · Answer

are you supposed to just write this in simplest form?

unklerhaukus · Answer

$$√19$$

unklerhaukus · Answer

more than 4, less than 5...

anonymous · Answer

well im in the middle of getting the area of triangles and everytime i hit the square root button on the calculator it shows 4.6436346 random numbers.

anonymous · Answer

thats because the square root of 19 is not a nice, pretty whole number.  it is a nonterminating, non repeating decimal.  Your calculator can only round to about 10 places.  When you don't get a whole number for an answer you use the square root symbol

anonymous · Answer

so i just but sqrt19?

anonymous · Answer

yeah, you just leave it like that, unless the directions tell you to round the answer to a certain place.  Thats when you use the square root button on the calculator

anonymous · Answer

do u know how to get the area of triangles?

anonymous · Answer

if you know the height it is 
$$\frac{1}{2}bh$$

anonymous · Answer

if you know the lengths of two sides and the angle between them it is 
$$\frac{1}{2}ab\sin(\theta)$$