Question

1. A square ceramic tile is 3.0 inches on a side, and 8.0 mm thick. What is its volume, in cubic centimeters?

2. A telephone pole is 35 ft long and 9.0 inches in diameter. What is its volume in cubic feet?

3. The iron pillar of Delhi is 23 feet 8 inches tall and 16 inches in diameter. What is its mass, in metric tons? (assume that it’s a perfect cylinder.)

4. A hula hoop 42 inches in diameter is made out of round tubing that is 20. mm (2 sig figs) in diameter. What is the volume of the hula hoop in cubic centimeters? Note that a hula hoop is a torus. The formula you need is: V=2π²r²R where r= the radius of the tubing and R is the radius of the hoop.

5. A doughnut is 34 mm thick (2r), and the distance from the center of the hole to the center of the dough is 1.1 inches (R). What is the volume of the doughnut in cubic inches? Assume the doughnut is a regular torus, so you can use the same formula as for the hula hoop: V=2π²r²R

(Note that if the doughnut is 34 mm thick, then r=34 mm/2 = 17 mm.)

Answer 1