Please help me out asap. I rlly need it

Please Help Me Out Asap I Rlly Need It class=

Answer :

Answer:

13.64

Step-by-step explanation:

it's because it's basically the same size as 12.3 but a bit bigger. it cant be 18.2 because that would be too big and it cant be 6.4 cause its too small and so is 10.79.