Answer:
A. 3cm by 3cm by 2cm or 6cm by 3cm by 1cm
B. 3cm by 3cm by 2cm
Step-by-step explanation:
POSSIBLE DEMENSIONS
3cm by 3cm by 2cm = 18cm^3
6cm by 3cm by 1cm = 18cm^3
LEAST AMOUNT OF MATERIAL
3 by 3 by 2 would mean 6cm squared of material per side
6 + 6 + 6 + 6 + 6 + 6 = 6 times 6 = 36
Total : 6 sides = 36cm^2 used
6 by 3 by 1 would mean 2 sides of 6cm^2, 2 sides of 3cm^2 and 2 sides of 18cm^2
18 + (6 + 6) + (3 + 3) =
18 + 12 + 9 =
30 + 9 = 39
Total: 39cm^2
