I need help with this please

Question

After large slabs of travertine were mined in Italy, they were cut into smaller blocks that were used to construct the Getty Museum. According to the website www.getty.edu, on average, each block at the Getty Center is 76  76 centimeters and weighs 115 kilograms, with a typical thickness of 8 centimeters. Find the surface area of one of these stones.

Answer 1

Each block is 76cm x 76cm x 8cm

It has two faces that are (76cm x 76cm)

It had four faces that are (8cm x 76cm)

So 2(76cm x 76cm) = 11,552cm^2

and 4(76cm x 8cm) = 2,432cm^2

11,552cm^2 + 2.432cm^2 = 13984cm^2