Circumference

A roundabout is a one-way circular intersection in the road. About how many feet would a car travel if it drove once around the roundabout? (Think about which formula to use: Are they providing the radius or diameter?

• ~240 ft

• ~940 ft

• ~470 ft

• ~50 ft

Tags

CCSS.7.G.B.4

An architect (person who designs buildings) is planning a new circular playground. If the picture is the playground, how much fencing needs to go up to keep the kids in the circle?

• 20.38 m

• 100.48 m

• 401.92 m

• 200.96 m

Tags

CCSS.7.G.B.4

A bicycle wheel has a diameter of 21 inches. What is the circumference of this wheel? (draw a picture if you need to see it!)

• 32.97 inches

• 131.88 inches

• 65.94 inches

• 6.7 inches

Tags

CCSS.7.G.B.4

A circle has a circumference of 37.86 yards. What is the diameter?

• 12 yards

• 6 yards

• 30 yards

• 2 yards

Tags

CCSS.7.G.B.4

Which ratio is equal to π?

• circumference/ radius

• circumference/ diameter

• diameter/ radius

• circumference/ pi

Tags

CCSS.7.G.B.4

A cycling trail in the shape of a circle has a diameter of 3 miles. Mya biked around the trail 4 times. Approximately how far did Mya cycle? (She went around FOUR times, not just ONE!)

• 19 miles

• 28 miles

• 38 miles

• 113 miles

Tags

CCSS.7.G.B.4

A circle has a diameter of 12 units. Which statement is true?

• The circumference is determined by multiplying 12 by π

• The circumference is determined by dividing π by 12

• The circumference is determined by adding 12 and π

• The circumference is determined by subtracting π from 12

Tags

CCSS.7.G.B.4

What is the circumference of a circle with a radius of 8 units in terms of pi?

(C = 2𝜋r)

• 8𝜋 units

• 16𝜋 units

• 32𝜋 units

• 4𝜋 units

Tags

CCSS.7.G.B.4

A model of a pizza Monica baked is shown.

Which number is closest to the circumference of the pizza?

• 150 in

• 151 in

• 75

• 75 in

Tags

CCSS.7.G.B.4

Look at the circle graphed on the coordinate grid.

Which of the following statement(s) are true?

I. The radius of the circle is 4 units.

II. The diameter of the circle is 8 units.

III. The circumference of the circle is close to 12.5 units. IV. The ratio of the circumference to the circle’s diameter is 3.14.

• I and II

• III only

• I, II, and IV

• III and IV

Tags

CCSS.HSG.GPE.A.1