SOLUTION: A hexagonal steel bar has the following description: 15 in. length. A circular hole in middle; 1.5 in. in diameter. (extends length of bar). Side of hexagon; 2 in. Stee

Question 1161738: A hexagonal steel bar has the following description:
15 in. length.
A circular hole in middle; 1.5 in. in diameter. (extends length of bar).
Side of hexagon; 2 in.
Steel weighs .283 lbs. / cu. in.
Determine volume and weight.
Not sure how to solve.

Answer by greenestamps(13203) (Show Source): You can put this solution on YOUR website!

The cross section is a hexagon with side length 2 with a circle of radius 3/4 inches cut out.

Area of hexagon:
Area of circle:

Cross-sectional area:

volume: cross-sectional area, times length (15 inches)

weight: volume, times pounds per cubic inch

Use a calculator....

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