Circumferences

In the circle, segment IK is a diameter. The measure of the arc JK = 124° and ∢ KJL = 39°. Find ∢ IKJ

• 51°

• 28°

• 30°

• 62°

In the circle, segment IK is a diameter. The measure of the arc JK = 124° and ∢ KJL = 39°. Find ∢ IJK

• 51°

• 28°

• 30°

• 90°

In the circle, the measure of the arc KLI = 116° and ∢ LKJ = 67°. Find ∢ LIJ

• 120°

• 113°

• 122°

• 55°

Select a secant line

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A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's approximate circumference?

• 3 m 

• 9.42 m

• 12 m

• 18.84 m

Find the circumference of a circle with a diameter of 11 millimeters.

• 34.6 mm

• 30 mm

• 25.3 mm

• 34.54 mm

Find the circumference of a circle with a radius of 13.5 mm.

• 37.68mm

• 18.84mm

• 84.78 mm

• none of the above

The circumference is 62.8 inches.  What is the radius?

• 20 inches

• 10 inches

• 6.28 inches

• 31.4 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

Find the circumference of a circle with a radius of 12.5 mm .

• 37.68mm

• 18.84mm

• 78.5mm

• none of the above