M E N U • DIRECTIONS 1. USEFUL FORMULAS 2. THE CIRCLE (3 VARIATIONS) 3. THE SPHERE (2 VARIATIONS) 4. THE SQUARE (2 VARIATIONS) 5. THE CUBE (2 VARIATIONS) 6. THE RECTANGLE 7. THE AIRPLANE 8. THE SLIDING LADDER 9. MAKING SHADOWS 10. THE CONICAL TANK 11. THE CONICAL PILE 12. FLYING A KITE 13. REVOLVING SEARCHLIGHT 14. TRAVELING CARS (2 VARIATIONS) 15. MORE SHADOWS 16. THE BASEBALL FIELD 17. THE CYLINDRICAL TANK 18. EQUATION ONE (2 VARIATIONS) 19. EQUATION TWO (2 VARIATIONS) 20. EQUATION THREE (2 VARIATIONS) 21. EQUATION FOUR (2 VARIATIONS) 22. EQUATION FIVE (2 VARIATIONS) 23. EQUATION SIX (2 VARIATIONS) 24. EQUATION SEVEN 25. THE REVOLVING BEACON 26. THE ISOSCELES TROUGH 27. THE SPACE SHUTTLE 28. GONE FISHING 29. THE CLOCK 30. THE TRIANGLE #1 31. THE TRIANGLE #2 32. THE SNOWBALL 33. THE OTHER AIRPLANE 34. YET ANOTHER SHADOW 35. THE BASKETBALL SHADOW 36. MAKING COFFEE

DIRECTIONS Click on one of the problem types to the left. The number in parenthesis indicates the number of variations of this same problem. Re-clicking the link will randomly generate other problems and other variations. All answers must be numeric and accurate to three decimal places, so remember not to round any values until your final answer. Also, remember NOT to use an approximation for π! Use the π key on the calculator. No /, *, or π symbols can be submitted in answers. After you have entered your answer, click the little clipboard to have it checked. These problems are randomized. Each time you refresh or click any link, (other than the little clipboard) all numeric values in the problem will be changed/randomized.