Answer:
the last one i think
Step-by-step explanation:
Answer:
In words, the surface area of a cube is the area of the six squares that cover it. The area of one of them is a*a, or a 2 . Since these are all the same, you can multiply one of them by six, so the surface area of a cube is 6 times one of the sides squared.
Step-by-step explanation:
THE first option is correct
Answer:
a = 300
Step-by-step explanation:
so 5/a=60
multiply 60 by 5