Question

A rod of iron of uniform density has a thickness such that a one-inch-long segment of it weighs 3.88 ounces. Given that there are 0.035273 ounces in a gram and 2.54 centimeters in an inch, how many grams would a 14.79 cm length of the same iron rod weigh?
a.
73.30 g
b.
274.49 g
c.
640.51 g
d.
1,626.89 g


Please select the best answer from the choices provided

A
B
C
D
Mark this and return

Answer 1

C

Work: 1 in of rod = 3.88 oz = 3.88 / 0.035273 ≈ 109.996 g.
14.79 cm = 14.79 / 2.54 ≈ 5.822834646 in.
Mass = 109.996 × 5.822834646 ≈ 640.51 g.