Calculating Circumference

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

• Circumference = pi * diameter

• Circumference = 2 * pi * diameter

• Circumference = pi * radius

• Circumference = 2 * pi * radius

Tags

CCSS.7.G.B.4

What is the value of pi?

• 0.577

• 1.618

• 2.71

• 3.14

Tags

CCSS.HSG.GMD.A.1

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

• 15 cm

• 10 cm

• 25 cm

• 31.4 cm

Tags

CCSS.7.G.B.4

If the diameter of a circle is 8 ft, what is its circumference?

• 25.12 ft

• 16 ft

• 8 ft

• 50.24 ft

Tags

CCSS.7.G.B.4

What is the unit of measure for circumference?

• Meters

• Inches

• Centimeters

• Feet

Tags

CCSS.2.MD.A.2

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

• 43.96 cm

• 14 cm

• 22 cm

• 87.92 cm

Tags

CCSS.7.G.B.4

What is the approximate circumference of a circle with a diameter of 10 ft?

• 20 ft

• 10 ft

• 62.8 ft

• 31.4 ft

Tags

CCSS.7.G.B.4

If the radius of a circle is doubled, how does the circumference change?

• It remains the same

• It halves

• It quadruples

• It doubles

Tags

CCSS.7.G.B.4

If the diameter of a circle is tripled, how does the circumference change?

• It triples

• It doubles

• It halves

• It remains the same

Tags

CCSS.7.G.B.4

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

• Circumference is half of the diameter

• Circumference is twice the diameter

• Circumference is equal to diameter

• Circumference is pi times the diameter

Tags

CCSS.7.G.B.4