math
posted by courtanay .
a picher cotained 2 liters of water justin drank 355 milliliters of the water how many milliliters of water were left in the pitcher

1 L = 1000 ml
2 L = 2000 ml 
what is the lenghts of the hypothenuse if the lenghts of the legs of a right triangle are 5cm and 12cm.?

Pythagorean Theorem: a^2 + b^2 = c^2
c is the hypotenuse 
i thought you had to substract when you have to find the hypothenuse.?
and add when you need to fid the lenght of a leg. 
erthj