How do you find the area of a circle?

How do you find the circumference of a circle?
What information do you need in order to find the area or circumference of a circle?
To determine the number of full rotations your tires complete before you need to switch the front and back tires, will you be working with area or circumference?

1 answer

To find the area of a circle, you use the formula A = πr^2, where A is the area and r is the radius of the circle.

To find the circumference of a circle, you use the formula C = 2πr, where C is the circumference and r is the radius of the circle.

To find the area of a circle, you need to know the radius of the circle. To find the circumference of a circle, you also need to know the radius of the circle.

In order to determine the number of full rotations your tires complete before you need to switch the front and back tires, you will be working with the circumference of the tires. This is because the circumference of a circle represents the distance around the circle, which is relevant when considering how much wear and tear a tire undergoes during each rotation.