Answer:
337.5 cm squared
Step-by-step explanation:
We are given the formula for the surface area of a cube: [tex]6a^2[/tex] , where "a" is the length of each edge.
The problem says that the length of each edge is 7.5, so this is the value for "a" that we want to use. Substituting 7.5 in for "a", we have:
[tex]6a^2=6*(7.5)^2=6*56.25=337.5[/tex]
Thus, the total surface area is just 337.5 cm squared.
Hope this helps!
