Question

A building is constructed using bricks that can be modeled as right rectangular

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prisms with a dimension of 72 in by 3 in by 2 in. If the bricks cost $0.10 per cubic
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inch, find the cost of 1250 bricks. Round your answer to the nearest cent.

Answer 1

The volume of each brick is 72 × 3 × 2 = 432 cubic inches, so 1,250 bricks will have a total volume of 540,000 cubic inches. Each brick costs $0.10/cubic inch, so the total cost of 1,250 bricks is

$0.10 × 540,000 = $54,000.