Circles & Composite Figures

Front

What does 'circumference' mean?

Back

Distance around a circle.

Front

What is the line segment that is half the length of the diameter?

Back

The radius.

Front

What is the formula for the area of a circle?

Back

Area = π × r², where r is the radius.

Tags

CCSS.7.G.B.4

Front

What is the diameter of a circle?

Back

A line that goes from one end of the circle to the other and crosses the center point.

Front

What is the relationship between diameter and radius?

Back

The diameter is twice the length of the radius.

Tags

CCSS.7.G.B.4

Front

How do you calculate the circumference of a circle?

Back

Circumference = π × d, where d is the diameter.

Tags

CCSS.7.G.B.4

Front

What is a composite figure?

Back

A shape that is made up of two or more simple shapes.

Tags

CCSS.1.G.A.2

Front

How do you find the area of a composite figure?

Back

Calculate the area of each simple shape and then sum them up.

Tags

CCSS.3.MD.C.7D

Front

What is the value of π (pi) approximately?

Back

Approximately 3.14.

Tags

CCSS.HSG.GMD.A.1

Front

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

Back

Circumference = 2 × π × 5 cm ≈ 31.4 cm.

Tags

CCSS.7.G.B.4