Circles - Exact and Approx.

Front

What is a circle?

Back

A circle is a shape consisting of all points in a plane that are at a given distance (radius) from a fixed point (center).

Front

What is the formula for the area of a circle?

Back

Front

What is the formula for the circumference of a circle?

Back

Front

What is the value of π (pi)?

Back

Front

How do you calculate the area of a circle with a radius of 4 cm?

Back

Front

What is the approximate area of a circle with a radius of 5 m?

Back

Front

If the diameter of a circle is 10 cm, what is the radius?

Back

Front

What is the relationship between diameter and radius?

Back

The diameter d of a circle is twice the radius: d = 2r.

Front

How do you find the circumference of a circle with a diameter of 12 inches?

Back

Front

What is the approximate circumference of a circle with a radius of 3 m?

Back