How is the formula for the circumference of a circle derived?
Drag and drop the correct word into each box to complete the explanation.
First, find the length of the diameter and the length of the------of the circle.
Next, divide the length of the circumference by the length of the ------- and set up an equation where the ratio equals ππ .
Then, solve the equation for the circumference.
Finally, substitute 2 times the ------ for the --------