Real Life Circumference and Area

A minute hand (radius) of a clock is 13.8 meters long. What is the circumference of the clock?

• 86.66 meters

• 76.66 meters

• 66.66 meters

• 96.66 meters

This crop circle has a diameter of 118 ft. What is the approximate area of the crop circle?

• 370.5 ft²

• 43,721.4 ft²

• 10,930.34 ft²

• 185.26 ft²

Steven purchases a bowl. The diameter of the bowl is 14 cm.
What is the distance around the bowl?

• 21.98 cm

• 43.98 cm

• 87.96 cm

• 7 cm

If you are going to paint the entire center circle of a basketball court, do you need to know the area or circumference of the circle?

• Area

• Circumference

• Neither

The homeowners association wants to enclose a circular playground in a fence. The need to find the amount of fencing they need to purchase.  Will they need the area or circumference of the playground?

• area

• circumference

• neither

What is the formula to calculate the circumference of a circle using the radius?

• C = 2r

• C = r²

• C = 2πr

• C = πd

If you know the circumference of a round cake is 31.4 inches, what is the radius?

• 20 inches

• 15 inches

• 10 inches

• 5 inches

If the radius of a circle is 5 inches, what is the circumference?

• 31.4 inches

• 25 inches

• 15.7 inches

• 10 inches

What is the radius if the circumference of a circle is approximately 18.84 inches?

• 12 inches

• 6 inches

• 3 inches

• 9 inches

If a circle has a diameter of 10 inches, what is its circumference?

• 25 inches

• 15.7 inches

• 20 inches

• 31.4 inches