Answer:
13 cms
Step-by-step explanation:
By Pythagoras:-
x^2 = 12^2 + 5^2
x^2 = 144 + 25
x^2 = 169
x = √169
= 13
19/6 ...or... 3.16 repeating
4 5/8 + 2/3 = 19/6
i think it is 2x and 4y