Circumference

Front

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

Back

Circumference = 2 × π × radius or Circumference = π × diameter.

Tags

CCSS.7.G.B.4

Front

If the radius of a circle is 10ft, what is the diameter?

Back

20ft.

Tags

CCSS.7.G.B.4

Front

What is the relationship between diameter and radius?

Back

Diameter is twice the radius.

Tags

CCSS.7.G.B.4

Front

If the diameter of a circle is 19 inches, what is the radius?

Back

9.5 inches.

Tags

CCSS.7.G.B.4

Front

What does the term 'circumference' refer to?

Back

The distance around the circle.

Front

If a circle has a circumference of 31.4 cm, what is its radius?

Back

5 cm (using the formula C = 2πr).

Tags

CCSS.7.G.B.4

Front

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

Back

43.96 cm (using the formula C = 2πr).

Tags

CCSS.7.G.B.4

Front

What is the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width).

Tags

CCSS.4.MD.A.3

Front

If a circle has a radius of 12 inches, what is its diameter?

Back

24 inches.

Tags

CCSS.7.G.B.4

Front

What is the circumference of a circle with a diameter of 10 inches?

Back

31.4 inches (using the formula C = πd).

Tags

CCSS.7.G.B.4