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Reika [66]
3 years ago
6

What is the surface area of the cube below? 9 9 9

Mathematics
1 answer:
Natali5045456 [20]3 years ago
3 0

Answer:

A_s=486\ units^2

Step-by-step explanation:

Remember that the sides of a cube always have the same length.

In this case the length of the sides L is:

L = 9.

The cubes have 6 faces. Then the surface area of the cube is equal to the area of its 6 faces.

Since all sides of the cube have the same measure, then the area of each face is:

A = L ^ 2

Then the area of the 6 faces is:

A_s = 6L ^ 2

A_s = 6 * (9 ^ 2)

A_s=486\ units^2

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