Final Review (Geometry)

Front

What is the formula for finding the area of a circle?

Back

A = π r²

Front

What is the circumference of a circle?

Back

The distance around a circle.

Front

What is the diameter of a circle?

Back

The distance across the circle through its center, equal to twice the radius.

Front

What is the radius of a circle?

Back

The distance from the center of the circle to any point on its circumference.

Front

How do you find the circumference of a circle?

Back

C = 2πr or C = πd, where r is the radius and d is the diameter.

Front

What is the relationship between diameter and radius?

Back

The diameter is twice the radius (d = 2r).

Front

What is π (pi)?

Back

A mathematical constant approximately equal to 3.14159, representing the ratio of a circle's circumference to its diameter.

Front

If the radius of a circle is 3 m, what is the area?

Back

A = π(3)² = 28.27 m² (approximately).

Front

If the circumference of a circle is 66 ft, what is the radius?

Back

r = C / (2π) = 66 / (2π) ≈ 10.5 ft.

Front

What is the area of a circle with a diameter of 16 m?

Back

A = π(8)² = 201.06 m² (approximately).