Answer: $20
Step-by-step explanation:
half of 40 is 20.....
Answer:
the first one
Step-by-step explanation:
CubeSA=6 squares
SA=6s^2
SA=24
24=6s^2
divide 6
4=s^2
2=s
quadrupled means times 4
2*4=8
8=new side
sub back
SA=6(8^2)
SA=6(64)
new SA=384 cm^2