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.)
C = 2π r
you know the value of r
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.
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.