Question

When the circumference and area of a circle are numerically equal what is the radius numerically equal to?

Answer 1

Explanation:

If the circumference and area of a circle are numerically equal, then we can write the following equation:

C = A

where C is the circumference and A is the area of the circle.

Using the formulas for the circumference and area of a circle, we can substitute and simplify the equation as follows:

2πr = πr^2

Dividing both sides by πr gives:

2 = r

Therefore, if the circumference and area of a circle are numerically equal, then the radius is numerically equal to 2.