CW Geometry Area Flashcard 1

Front

What is the formula for the length of an arc?

Back

Length of an arc = (θ/360) × 2πr, where θ is the central angle in degrees and r is the radius.

Front

How do you find the area of a square?

Back

Area = side length × side length.

Front

What is the formula for the area of a triangle?

Back

Area = (1/2) × base × height.

Front

What is an apothem in relation to a polygon?

Back

An apothem is a line from the center of a regular polygon perpendicular to one of its sides.

Front

How do you calculate the area of a regular octagon?

Back

Area = (1/2) × Perimeter × Apothem.

Front

What is the formula for the area of a regular hexagon?

Back

Area = (3√3/2) × side length².

Front

What is the relationship between the radius and the diameter of a circle?

Back

Diameter = 2 × Radius.

Front

How do you convert area from square meters to square centimeters?

Back

Multiply by 10,000 (1 m² = 10,000 cm²).

Front

What is the significance of π in geometry?

Back

π (pi) is the ratio of the circumference of a circle to its diameter, approximately equal to 3.14.

Front

How do you find the side length of a square given its area?

Back

Side length = √Area.