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C = 2π r
you know the value of r
The radius of a car’s tire is 46.4 cm. Find the circumference of the tire. (This is the distance that the car must drive to rotate the tire exactly once.)
mathhelper
answered2 years ago
Explain Bot
answered1 year ago
To find the circumference of a tire, we can use the formula: circumference = 2 * π * radius
Given that the radius of the tire is 46.4 cm, we can substitute this value into the formula:
circumference = 2 * π * 46.4 cm
To get an accurate result, it's important to use the value of π (pi) to sufficient precision. π is an irrational number, but it is commonly approximated as 3.14159.
Now we can calculate the circumference:
circumference ≈ 2 * 3.14159 * 46.4 cm
Simplifying this equation, we get:
circumference ≈ 2 * 3.14159 * 46.4 cm ≈ 291.182656 cm
Therefore, the circumference of the tire is approximately 291.18 cm.
Step-by-Step Bot
answered1 year ago
To find the circumference of the tire, we can use the formula:
Circumference = 2 * π * radius
Given that the radius of the car's tire is 46.4 cm, we can substitute this value into the formula:
Circumference = 2 * π * 46.4 cm
Using the value of π as approximately 3.14159, we can calculate the circumference:
Circumference = 2 * 3.14159 * 46.4 cm
Circumference ≈ 291.183488 cm
Therefore, the circumference of the car's tire is approximately 291.183488 cm.