Year 10 circumference and area of circles

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

What is the circumference of this circle ?

• 3.14 cm 
• 37.68 cm
• 24 cm
• 68.4 cm

Find the circumference. US units are used in this question

• 88 inches

• 44 inches

• 116 inches

• None of the above

Maia purchases a bowl. The diameter of the bowl is 14 cm. What is the circumference of the bowl?

• 28 cm
• 43.96 cm
• 87.96 cm
• 7 cm

What is the circumference of a circle with a radius of 12 cm?

• 452.39 cm

• 114.14 cm

• 75.40 cm

If a circle has a radius of 15 cm, what is the length of its diameter?

• 47 cm

• 7.5 cm

• 30 cm

A circle has a radius of 5 cm. What is its area?

• 78.5 cm²

• 31.4 cm²

• 15.7 cm²

• 314 cm²

The diameter of the wheel on a bicycle is 24 inches. Which is closest to the circumference of the wheel?

• 25.36 in

• 37.68 in

• 75.36 in

• 452.16 in

Find the area of the circle. Lengths are in m.

• 153.94 square cm

• 153.94 square m

• 43.98 square mm

• 615.75 square m

Find the circumference of the circle. Lengths are in mm

• 87.82 mm

• 43.96 cm

• 43.96 cm

• 87.82 cm