Circumference of a Circle Flashcard

Front

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

Back

The formula to calculate the circumference (C) of a circle is C = πd, where d is the diameter.

Tags

CCSS.7.G.B.4

Front

If a circle has a radius of 4 meters, what is its circumference?

Back

25.12 meters

Tags

CCSS.7.G.B.4

Front

What is the relationship between the radius and diameter of a circle?

Back

The diameter (d) is twice the radius (r), so d = 2r.

Front

If a circle's diameter is 8 cm, what is its radius?

Back

4 cm

Tags

CCSS.7.G.B.4

Front

What is the value of π (pi) approximately?

Back

π is approximately 3.14.

Tags

CCSS.HSG.GMD.A.1

Front

If the circumference of a circle is 62.8 meters, what is the diameter of the circle?

Back

20 meters

Tags

CCSS.7.G.B.4

Front

If the diameter of a circle is 10 inches, what is the circumference?

Back

31.4 inches

Tags

CCSS.7.G.B.4

Front

What is the circumference of a circle with a diameter of 14 feet using the formula C = πd?

Back

43.96 feet

Tags

CCSS.7.G.B.4

Front

How do you convert diameter to radius?

Back

To convert diameter to radius, divide the diameter by 2.

Tags

CCSS.7.G.B.4

Front

What is the circumference of a circle with a radius of 5 meters?

Back

31.4 meters

Tags

CCSS.7.G.B.4