15. The formula is a^2+b^2=c^2. So you just plug in the 9 and 12 in the a and b. You get 225. You then take the square root of that and get 15.
Answer:
15.25 is your answer
Step-by-step explanation:
Answer:
n = 12 1/4
Step-by-step explanation:
do you need me to explain it too? I can! XD ^_^