Front

What is the formula for the circumference of a circle?

Back

C = 2πr or C = πd, where r is the radius and d is the diameter.

Tags

CCSS.7.G.B.4

Front

What is the formula for the area of a circle?

Back

A = πr², where r is the radius.

Tags

CCSS.7.G.B.4

Front

What does π (pi) represent?

Back

π is a mathematical constant approximately equal to 3.14, representing the ratio of the circumference of a circle to its diameter.

Tags

CCSS.HSG.GMD.A.1

Front

If the radius of a circle is 7 cm, what is its circumference?

Back

C = 2π(7) ≈ 43.96 cm.

Tags

CCSS.7.G.B.4

Front

If the diameter of a circle is 10 cm, what is its area?

Back

A = π(5)² ≈ 78.54 cm².

Tags

CCSS.7.G.B.4

Front

What is the relationship between diameter and radius?

Back

The diameter is twice the length of the radius (d = 2r).

Tags

CCSS.7.G.B.4

Front

What is the circumference of a circle with a diameter of 14 cm?

Back

C = π(14) ≈ 43.98 cm.

Tags

CCSS.7.G.B.4

Front

What is the area of a circle with a radius of 10 cm?

Back

A = π(10)² ≈ 314.16 cm².

Tags

CCSS.7.G.B.4

Front

How do you convert diameter to radius?

Back

Divide the diameter by 2 (r = d/2).

Tags

CCSS.7.G.B.4

Front

What is the circumference of a circle with a radius of 3 cm?

Back

C = 2π(3) ≈ 18.85 cm.

Tags

CCSS.7.G.B.4