Finnd the total area of a cube with an edge of 9.

A) 324 square units

B) 486 square units

C) 162 square units

D) 398 square units

pwolfey  Nov 2, 2017

Since area is in square units rather than cube units, I'm going to assume this is the surface area, not the volume.

Each edge = 9, so each side has an area of 81 units2. Since a cube has 6 sides, the overall area is (side area) times 6. \(81 \times 6 = 486\) units2, so the answer is b.

helperid1839321  Nov 2, 2017

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