Question

1. which definition describes $\pi$?

• a. the ratio of the circumference of a circle to its diameter.
• b. the ratio of the circumference of a circle to its radius.
• c. the radius of a circle times 2 times 3.14.
• d. the diameter of a circle times 2 times 3.14.

Explanation:

The definition of π is the constant ratio of a circle's circumference to its diameter. Option A matches this definition. Option B is incorrect because circumference to radius is 2π, not π. Options C and D describe calculations for circumference (2πr or πd) but not the definition of π itself.

Answer:

A. The ratio of the circumference of a circle to its diameter.