Circumference and Area of Circles

Front

What is the radius of a circle?

Back

The radius of a circle is the measurement from the center of a circle to an edge of the circle.

Front

How do you calculate the radius from the diameter?

Back

To calculate the radius from the diameter, divide the diameter by 2.

Tags

CCSS.7.G.B.4

Front

If the radius is 10 ft, what is the diameter?

Back

The diameter is 20 ft.

Tags

CCSS.7.G.B.4

Front

If the diameter is 19 inches, what is the radius?

Back

The radius is 9.5 inches.

Tags

CCSS.7.G.B.4

Front

What is the formula for the circumference of a circle using the diameter?

Back

Tags

CCSS.7.G.B.4

Front

What is the formula for the circumference of a circle using the radius?

Back

Tags

CCSS.7.G.B.4

Front

What is the area of a circle?

Back

Tags

CCSS.7.G.B.4

Front

If the radius of a circle is doubled, how does the area change?

Back

If the radius is doubled, the area increases by a factor of four.

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 diameter of 15 mm?

Back

Tags

CCSS.7.G.B.4