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)?
$5
$15
$37
$93

Question

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)?
$5
$15
$37
$93

aaronq · Answer

This is more a math problem, just find the volume of the bar, then multiply it by the cost per cm^3.

$V_{rectangular~prism}=side*side*side$