Geometry Assignment 2.24

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2 × π × radius or Circumference = π × diameter.

Front

What is the value of π (pi) approximately?

Back

π (pi) is approximately 3.14.

Front

What is the radius of a circle?

Back

The radius is a line from the center point to the edge of the circle.

Front

If the radius of a circle is 5 inches, what is the circumference?

Back

31.4 inches.

Front

What is the formula for the area of a circle?

Back

Area = π × radius².

Front

What is the area of a circle with a diameter of 10 cm?

Back

78.5 cm².

Front

What is the diameter of a circle?

Back

The diameter is a line that crosses through the center and touches each edge.

Front

If the diameter of a circle is 40 inches, what is the circumference?

Back

125.6 inches.

Front

What is the area of a circle with a radius of 7 cm?

Back

Area = π × (7 cm)² = 153.86 cm².

Front

What is the relationship between diameter and radius?

Back

Diameter = 2 × radius.