Hey! I believe the answer is A. Have a nice/great day! :-)
Y-1=10
+1. +1
So y = 11
Hope that helps
B h lnv go lobcdxxjkllkfvnnnjgfcxx cabvbm
Check the picture below.
ok, notice the volume of the smaller cube forming the larger cube. Keeping in mind that the larger cube has 90 of those small ones.