2. Which mathematicians probably used a decimal system of numbers?
(a) Euclid and Aristotle.
(b) Archimedes and Apollonius.
(c) Hipparchus and Ptolemy.
(d) Thales and Pythagorus.

3. Where is the center of balance on a spoon?
(a) In the center.
(b) Near the bowl of the spoon.
(c) Near the end of the spoon's handle.
(d) At the bowl of the spoon.

4. When did Marcellus notice a poorly guarded wall and tower in Syracuse?
(a) 212 B.C.
(b) 225 B.C.
(c) 215 B.C.
(d) 209 B.C.

5. What does radius mean?
(a) The longest chord of a circle.
(b) The distance around a circle.
(c) Length of a circle from the center to the rim.
(d) The shortest chord of a circle.

6. After Archimedes used a common Greek measure to estimate the number of grains of sand in the universe, what measure did he use?
(a) Cubit.
(b) Royal Cubit.
(c) Stadium.
(d) Fingerbreadths.

7. What is the formula for the area of a circle?
(a) Multiply pi times the radius of the circle times the radius again.
(b) Multiply the radius times the circumference of a circle.
(c) Subtract the radius from the circumference of a circle.
(d) Multiply the length of the circle from rim to rim times pi.

8. How did the people of Syracuse celebrate their favorite festival?
(a) With plays and feasts.
(b) By making sacrifices.
(c) With dancing, games, food and wine.
(d) By fasting.

9. What is a good project to learn about centers of gravity?
(a) Experiment with rulers.
(b) Make a mobile.
(c) Make a balance scale.
(d) Experiment with spoons.

10. What did Archimedes want on his tomb?
(a) Drawing of a cylinder.
(b) Drawings of plane figures.
(c) Drawing of a sphere.
(d) A figure of a sphere and cylinder.

11. How long did Marcellus hold Syracuse in siege.
(a) One year.
(b) Two years.
(c) Three years.
(d) Four years.

12. In what book did Archimedes give mathematicians a logical way to start any problem and an orderly way of setting things down?
(a) Ostomachion.
(b) On Floating Bodies.
(c) The Sand Reckoner.
(d) Method.

13. What did Marcellus have his workmen build when he noticed a poorly guarded wall and tower in Syracuse?
(a) Climbing poles.
(b) Scaling ladders.
(c) Step ladders.
(d) Bridges.

14. What is a name of a paper that Archimedes wrote about arithmetic?
(a) Stomachion.
(b) The Palimpsest.
(c) The Method.
(d) The Sand Reckoner.

15. What did Marcellus' soldiers use to make noise when they entered Syracuse?
(a) Shouts.
(b) Trumpets.
(c) Glass jars.
(d) Bullhorns.