Video Transcript
The surface area of a cube is 1020
square centimeters. What is the area of one face of the
cube?
Remember, the surface area of a
three-dimensional shape is the total area of all of its faces. We’re looking to find the surface
area of a cube. Now, we know a cube is a
three-dimensional shape whose faces are all squares. It has six identical faces. Since all of these faces will have
the exact same area, we can calculate the area of one of the faces by dividing the
surface area by six. We might use the bus stop method to
perform this calculation. We say, how many sixes make
one? Well, it’s zero. And instead, we ask ourself, how
many sixes make 10? It’s one remainder four.
Next, we ask ourself, how many
sixes make 42? That’s seven. And how many sixes make zero? That’s zero. This means that 1020 divided by six
is 170. The surface area measurement is
given in square centimeters. Now, we’re still looking at areas,
so our units are also square centimeters. And we can therefore say that the
area of one face of our cube is 170 square centimeters.
