Circles Circumferences

MUST DO: Elsie bought a circular rug that is 9 feet in diameter. What is the circumference of the rug rounded to the nearest tenth of a foot?

• 4.5 feet

• 14.1 feet

• 28.3 feet

• 56.5 feet

The radius of a circle is 12 cm. What is the approximate circumference of the circle?

• 75 cm

• 38 cm

• 24 cm

A flower pot has a circumference of 35 inches. What is the approximate length of the radius of the flower pot?

• 3.3 inches

• 5.6 inches

• 6.8 inches

• 11.1 inches

A circle has a diameter of 4.5 cm. A larger circle has a diameter of 24 cm. What is the approximate difference in the circumferences of the two circles?

• 19.5 cm

• 28.5 cm

• 61 cm

• 90 cm

MAY DO: A circular track with a diameter of 60 meters is shown. Shaleah walked around the track 4 times. Approximately how many meters did she walk?

• 377

• 2826

• 754

• 11,304

Sadie has 38 inches of fringe to sew around a circular pillow. What is the approximate diameter of the largest pillow she can use?

• 6 inches

• 9 inches

• 10 inches

• 12 inches

The circumference of a circle is 188 meters. What is the approximate radius of the circle?

• 128 meters

• 94 meters

• 60 meters

• 30 meters

What is the term for a circle that touches another circle from the outside at just one point?

• externally tangent

• concentric

• intersecting

• non-tangent

What do you call the space between two concentric circles?

• ring

• annulus

• sector

• segment

two circumferences are considered to be ______ when they have two points in common