Question

A company makes concrete bricks that are shaped like rectangular prisms. Each brick is 5 inches long, 4 inches wide, and 2 inches tall. How much concrete will they need to make 1600 bricks?

Answer 1

`64000 \ in.^3`

Explanation:

The amount of concrete needed would be measurable by the volume of the brick, since a brick is three-dimensional.

The volume of a rectangular prism is found using the formula:
`V=l * w * h`

You are given the length (5 in.), width (4 in.), and height (2 in.) of the bricks. Find how much concrete is needed to make a single brick.

Single brick volume:

• 
  `5 \ in. \ * 4 \ in. \ * 2 \ in.`
• 
  `40 \ in.^3`

In order to find how much concrete would be needed to make 1600 bricks, you would need to multiply the amount of concrete needed to make 1 brick by 1600.

• 
  `40\ in.^3 * 1600`
• 
  `64000 \ in.^3`

The company would need
`64000 \ in.^3` of concrete to make 1600 bricks.