A = 1/2 (b x h)
A = 1/2(12.5 x 2.4)
A = 1/2(30)
A = 15
Cube surface area = side^2 * 6
cube surface area = 2.3^2 * 6
cube surface area = 31.74 cm^2
Answer:
Either do 28+28+28, etc. 38 times, or follow the diagram I attached.
If you want to know more about what I did in the attachment, just ask <3