Circumference & Area of a Circle

Front

What is the formula for finding the circumference of a circle with just the radius?

Back

2πr

Tags

CCSS.7.G.B.4

Front

If the radius of a circle is 9 meters, what is the circle's circumference?

Back

56.52 meters

Tags

CCSS.7.G.B.4

Front

What is the formula for finding the area of a circle?

Back

πr²

Tags

CCSS.7.G.B.4

Front

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

Back

78.5 cm²

Tags

CCSS.7.G.B.4

Front

What is the relationship between diameter and radius?

Back

Diameter = 2 × Radius

Tags

CCSS.7.G.B.4

Front

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

Back

20ft

Tags

CCSS.7.G.B.4

Front

What is the diameter of a circle with a circumference of 31.4 meters?

Back

10 meters

Tags

CCSS.7.G.B.4

Front

What is the circumference of a circle with a diameter of 12 cm?

Back

37.68 cm

Tags

CCSS.7.G.B.4

Front

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

Back

153.94 cm²

Tags

CCSS.7.G.B.4

Front

What does the term 'radius' mean in relation to a circle?

Back

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