20 pts Could someone help me with this expression? Simplify: 3 (2+a)
1 answer:
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Answer:
a)
b) 216 cm^2
Step-by-step explanation:
A) the area of one face of the cube, is the side length x the side length. As it is a cube, all sides are the same length, so we do c x c =
There are 6 faces in a cube so we have to times one face by 6 to get
B) c = 6
substituting this into the equation we made:
6 x (6)^2
6 x 36
216
So the surface area is 216 cm^2.
Hope this helps, let me know if you have any questions :)