First, let’s draw a cube, in which we designate an edge at 2.5 cm.
Since in a cube all the edges are equal, the length, width and height are equal to 2.5 cm.
Whereas, to find the surface area of a cube, you need to multiply the perimeter of the base by the height.
Then we find the perimeter of the base: 2.5 * 4 = 10 cm.
Therefore, the total surface area is: 10 * 2.5 = 25 cm2.
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