Circumference quizizz

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

• Pi times radius squared

• Two times Pi times diameter

• Two times Pi times radius

• Pi times diameter

Tags

CCSS.7.G.B.4

Choose the answer which best describes how these formulas are related to each other.

• They both solve for circumference. In the first formula it uses diameter, in the second formula it uses two times the radius, which is the same thing as diameter.

• They both solve for circumference, in the first uses diameter and the second uses pi.

• They both solve for area. In the first formula it uses diameter, in the second formula it uses two times the radius, which is the same thing as diameter.

• They both use circumference to solve for pi. One uses radius, the other uses diameter.

Tags

CCSS.7.G.B.4

What day is Pi Day?

• March 14

• December 25

• October 31

• January 1

Tags

CCSS.HSG.GMD.A.1

Davis has trained his puppy, copper, to jump through a ring. According to Davis's measurements and calculations, the ring has a diameter of 3.5 feet. What is the ring's circumference

• 21.98 ft

• 12.25 ft

• 10.99 ft

• 38.47 ft²

Tags

CCSS.7.G.B.4

Find Circumference. Round to the nearest hundredths.

• 40.69 yd

• 5.65 yd

• 11.30 yd

• 22.61 yd

Tags

CCSS.7.G.B.4

If the radius equals 7.2 what is the circumference?(use 3.14 as PI)

• 45.216

• 50.378

• 46.215

• 14.4

Tags

CCSS.7.G.B.4

What is the length of the radius of the circle?

(a)  

Tags

CCSS.7.G.B.4

What two formulas can you use to find the circumference?

• C = π·d

• C = π·r²

• C = 2·π·r

• C = d²

Tags

CCSS.7.G.B.4

What is the length of the diameter of the circle?

(a)  

Tags

CCSS.7.G.B.4

What is the circumference of a circle with an area of 100π sq inches?

• 10π in

• 5π in

• 25π in

• 20π in

Tags

CCSS.7.G.B.4