EDIT:
Order of operations doesn't matter in addition. So you can add them in any order.
Answer:
24
Step-by-step explanation:
First find the length of the diagonal of a square of side 4 inches:
d^2 = 4^2 + 4^2 = 2*4^2 = 32. Then the diagonal of the cube has length
sqrt( 32 + 4^2) = sqrt(32+16) = sqrt(48) = 4sqrt(3).
Answer:d
Step-by-step explanation:
16-4=12 and 16+4=20