Year 8 Maths_Circumference

If you have a circle with a diameter of 14cm, what is the radius?

• 14 cm

• 7 cm

• 10 cm

• 11 km

If you have a circle with a radius of 12mm, what is the diameter?

• 12 mm

• 6 mm

• 20 cm

• 24 mm

Find the circumference of this circle

• 31.4 in

• 5 in

• 20 in

• 3.14 in

Find the circumference of this riz circle.

*HINT: find the diameter first, then use that to find the circumference

• 3 ft

• 12 ft

• 37.68 ft

• 18.84 ft

Find the radius of the circle

• 20 ft

• 10 ft

• 5.5 ft

• 10

The Disney cruise ship has a large, circular window for Mickey Mouse to look out. It has a diameter of 6 metres. What is the window's approximate circumference?

• 3 mm 

• 9.42 km

• 12 m
• 18.84 m

What is the formula for CIRCUMFERENCE of a circle?

• C=πd

• C=πd²

• A=πr²

• C=πβγΔ

What is Circumference?

• π
• The distance around the outside of a circle
• The amount of space on the inside of a circle

Your Geography teacher rents a fast car for the weekend. Her friend, a Science teacher, uses a stopwatch to time how long it takes your teacher to make one complete revolution about the track. Is this question circumference or area?

• Circumference
• Area

Taytay purchases a pink 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