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| Question | Answer |
| If a tire has a diameter of 9 inches, how far will it travel in one revolution? | A revolutions is the outside edge of the tire so it is circumference.C = π x d = 3.14 x 9 = 28.26 |
| If I have a tire with a radius of 4 feet, how far will it travel in 5 revolutions?2 | A revolutions is the outside edge of the tire so it is circumference. C=πxd C = 3.14 x 8 C = 25.12 25.12 x 5 = 125.6. 2 |
| I paint a circle that has a radius of 6 feet. How much concrete will I cover?3 | A = π x r x r So, 3.14 x 6 x 6 = 113.04. 3 |
| The circumference of a wheel is 12.56. What is the radius of the wheel?4 | circumference ÷ π So, 12.56 ÷ 3.14 = 4, then, diameter = 4, therefore, diameter ÷ 2 = 2 the radius = 2. 4 |
| If the longest chord of a circle measures 8 cm, what is the area the circle?5 | The diameter is the longest chord so the diamter is 8, meaning the radius is 4. A=π • r • r or A = 3.14 • 4 • 4. The area is 50.24.5 |