Illustrative Math Circle

Find the circumference of this circle.

• About 45 cm

• About 30 cm

• About 47 cm

• About 25 cm

The graph shows that while it was being filled, the amount of water in gallons in a swimming pool was approximately proportional to the time that has passed in minutes. How many gallons will be in the pool after 25 minutes?

• About 100 gallons

• About 230 gallons

• About 380 gallons

• About 450 gallons

The circumference of Tyler's bike tire is 72 inches. What is the diameter of the tire?

• About 36 inches

• About 40 inches

• About 20 inches

• About 23 inches

The diameter of a bike wheel is 27 inches. If the wheel makes 15 complete rotations, how far does the bike travel?

• 1,271.7 inches

• 405 feet

• 105.975 feet

• 4,860 inches

A line that touches a circle in just one point.

• tangent

• chord

• secant

• radius

Drag and Drop the labels to the correct place on the circle

b

c

d

e

a

Tangent

Diameter

Chord

Secant

Radius

• 2 meters

• 4 meters

• 5 meters

• 8 meters

Find the area of the polygon.

• 24 centimeters squared

• 18 centimeters squared

• 20 centimeters squared

• 16 centimeters squared

Jada paints a circular table that has a diameter of 37 inches. What is the area of the table?

• 1,000 inches squared

• 895.9 inches squared

• 1,438 inches squared

• 1,074.6 inches squared

The face of a clock has a circumference of 63 in. What is the area of the face of the clock?

• About 300 inches squared

• About 314 inches squared

• About 345 inches squared

• About 327 inches squared