What is the formula for circumference of a circle given the diameter?

• C = π r
• C = 2 π r
• C = π d
• C = 2 π d

Tags

CCSS.7.G.B.4

A circle has a diameter of 8cm. Find the circumference of the circle.

• 25.12 cm

• 4 cm

• 16 cm

• None of the above

Tags

CCSS.7.G.B.4

Find the circumference of a circle with a diameter of 10 m.

• 31.4 m

• 314 m

• 3.14 m

• 3140 m

Tags

CCSS.7.G.B.4

A circle has a diameter of 15.3 mi. What is the circumference of the circle?

• 48.042 mi

• 735.0426 mi

• 24.021 mi

• 183.76065 mi

Tags

CCSS.7.G.B.4

A circle has a diameter of 6ft. What is the circumference of the circle?

• 18.84 ft

• 113.04 ft

• 36 ft

• None of the above

Tags

CCSS.7.G.B.4

Find the circumference of a circle with diameter = 10 ft

• 3.14 ft
• 31.4 ft
• 314.1 ft
• 62.8 ft

Tags

CCSS.7.G.B.4

Find the circumference of a circle with diameter = 30 ft

• 942 ft
• 94.2 ft
• 188.5 ft
• 9.42 ft

Tags

CCSS.7.G.B.4

Find the circumference of a circle with
diameter = 0.5 ft

• 3.1 ft
• 1.6 ft
• 16 ft
• 2 ft

Tags

CCSS.7.G.B.4

If you are given the diameter, how can you calculate the radius

• Multiply the diameter by 2
• Divide the diameter by 2
• add the diameter plus 2