Circles & Composite Figures

Front

What does 'circumference' mean?

Back

Distance around a circle.

Front

What is the formula to calculate the circumference of a circle?

Back

Circumference = 2 × π × radius.

Tags

CCSS.7.G.B.4

Front

What is the radius of a circle?

Back

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

Front

What is the diameter of a circle?

Back

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

Tags

CCSS.HSG.C.A.2

Front

How do you find the diameter if you know the radius?

Back

Diameter = 2 × radius.

Tags

CCSS.7.G.B.4

Front

What is a composite figure?

Back

A shape made up of two or more simple shapes.

Tags

CCSS.1.G.A.2

Front

How do you find the circumference of a circle with a radius of 12.7 m?

Back

Circumference = 2 × π × 12.7 m ≈ 79.76 m.

Tags

CCSS.7.G.B.4

Front

What is the relationship between diameter and circumference?

Back

Circumference = π × diameter.

Tags

CCSS.7.G.B.4

Front

How do you find the distance around a composite figure?

Back

Add the circumferences of the individual shapes that make up the composite figure.

Front

What is π (pi)?

Back

A mathematical constant approximately equal to 3.14, used in calculations involving circles.

Tags

CCSS.HSG.GMD.A.1