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4 November, 19:38

A metal worker wants to figure out the cost of making a rectangular iron bar. He knows that the required dimensions of the bar are 8.0 cm (width), 0.40 cm (height), and 310 cm (length). If this kind of iron costs $0.015 per cm3, what is the cost of making the bar (to the nearest dollar) ?

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  1. 4 November, 19:53
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    The cost of making the bar is $14.88 or rounded up to the nearest dollar $15.00

    Given:

    width = 8 cm

    length = 310 cm

    height = 0.40 cm

    cost = $0.015 per cm³

    Volume of a rectangular prism is solved by multiplying its length, its width, and its height.

    V = l * w * h

    = 310 cm * 8 cm * 0.40 cm

    V = 992 cm³

    Total cost = Volume * cost per cm³

    = 992 cm³ * $0.015/cm³

    Total cost = $14.88
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