Circles - Area and Circumference

Front

What is a circle?

Back

A circle is a shape consisting of all points in a plane that are a fixed distance (radius) from a central point (center).

Front

What is the radius of a circle?

Back

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

Front

What is the diameter of a circle?

Back

The diameter is a line segment that passes through the center of the circle and has its endpoints on the circle. It is twice the length of the radius.

Tags

CCSS.HSG.C.A.2

Front

What is the formula for the circumference of a circle?

Back

Tags

CCSS.7.G.B.4

Front

What is the formula for the area of a circle?

Back

Tags

CCSS.7.G.B.4

Front

What is the relationship between diameter and radius?

Back

Tags

CCSS.7.G.B.4

Front

What is the circumference of a circle with a radius of 4 cm?

Back

Tags

CCSS.7.G.B.4

Front

What is the area of a circle with a radius of 4 cm?

Back

Tags

CCSS.7.G.B.4

Front

What is a semi-circle?

Back

A semi-circle is half of a circle, formed by cutting a whole circle along its diameter.

Front

How do you calculate the area of a semi-circle?

Back

Tags

CCSS.7.G.B.4