Variables
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The document provides examples of valid Java identifiers and common data types that can be used. It then presents several math word problems involving calculations for gas mileage of a car, perimeter and area of basic shapes like triangles, circles, and rectangles. It lists the key variables needed to set up and solve each type of problem.
Variables
- 1. Welcome 1. Name one of the rules for creating a valid Java identifier Mr. Daniels
- 2. Valid Identifiers must start with a letter consist of only letters and numbers ; no symbols, punctuation or spaces cannot use reserved words use capitals for each new word in a phrase
- 3. Common Data Types points = scan.nextInt(); price = scan.nextDouble(); sentence = scan.nextLine(); letter = scan.next().charAt(0);
- 4. 2 Gas Mileage A car's gas tank holds 23 gallons and averages 15 miles per gallon. How far can the car go on one tank of gas?
- 5. 2 Gas Mileage We need 3 variables How much gasoline the tank can hold Miles per gallon Distance on a tank
- 6. 3 Perimeter of a Triangle 4 variables Leg A Leg B Leg C A B C
- 7. 4 Area of a Circle 3 variables pi distance from the edge to the center
- 8. 5 Circumference of a Circle 3 variables pi distance through the center
- 9. 6 Area of Rectangle The length of a rectangle is 9, the width is 5. Find the area of the rectangle.
- 10. 6 Area of a Rectangle
- 11. 7 Perimeter of a Rectangle The length of a rectangle is 5, the width is 3. Find the perimeter of the rectangle.