Question

The bells are adding a new room to their house. The room will be a cube with volume 8,000 ft^3. They are going to put in hardwood​ floors, and the contractor charges ​$10 per square foot. How much will the hardwood floors​ cost?

Answer 1

$4000

Explanation:

Given that :

Volume of cube = 8000 ft³

Charge per ft² = $10

Recall, volume of a cube = a³

Where a = edge

Hence,

a³ = 8000

Take the cube root of both sides

a = 20

Hence,

Volume = 20 * 20 * 20

The Area of the floor will be :

20 * 20 = 400 ft²

If charge per ft² = $10

400 ft² = ($10 * 400) = $4000