Circumference Exit Ticket

Front

What is the formula for calculating the circumference of a circle?

Back

C = π·d, where C is the circumference and d is the diameter.

Tags

CCSS.7.G.B.4

Front

What does the symbol π (pi) represent?

Back

π (pi) 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 diameter of a circle is 10 cm, what is its circumference?

Back

C = π·d = 3.14 × 10 = 31.4 cm.

Tags

CCSS.7.G.B.4

Front

What is the relationship between radius and diameter?

Back

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

Tags

CCSS.7.G.B.4

Front

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

Back

d = 2r = 2 × 7 = 14 cm.

Tags

CCSS.7.G.B.4

Front

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

Back

C = 2πr = 2 × 3.14 × 5 = 31.4 cm.

Tags

CCSS.7.G.B.4

Front

What does 'circumference' mean?

Back

Circumference is the distance around the edge of a circle.

Front

If a circle has a circumference of 62.8 cm, what is its diameter?

Back

d = C/π = 62.8/3.14 = 20 cm.

Tags

CCSS.7.G.B.4

Front

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

Back

C = π·d = 3.14 × 12 = 37.68 cm.

Tags

CCSS.7.G.B.4

Front

What is the radius of a circle with a circumference of 31.4 cm?

Back

r = C/(2π) = 31.4/(2 × 3.14) = 5 cm.

Tags

CCSS.7.G.B.4