Circle Lengths
Random Circles
Random Questions
Circle Areas
Circle Problems
100
The distance from one side of a circle through the centre to the other.
What is Diameter (d)?
100
Pizzas are sliced into these.
What is a sector?
100
Which sea animals hold hands so they don't fall apart?
What are Sea Otters?
100
The name for half a circle.
What is semi-circle?
100
What is CD called?
What is an arc?
200
The distance from one side of the circle to the centre point.
What is Radius?
200
This part of a circle has a right angle.
What is a quadrant?
200
What is the name of Kristoff's reindeer in Frozen?
What is Sven?
200
Two of these make a semi-circle.
What is quadrant?
200
Use the formula to find the circumference of this circle to the nearest whole number.
2pir
What is 44cm?
300
The perimeter of a circle.
What is circumference?
300
Complete this quote:
"Life is a circle. The end of one journey is the ___________ of the next."
What is beginning?
300
What animal has blue blood and nine brains?
What is an octopus?
300
A portion of a circle enclosed by two radii.
What is a sector?
300
Find the perimeter of this semi-circle (to 2 decimal places).
Remember,
2pir divide 2 + d
What is 33.13cm?
400
A straight line outside a circle that touches the circumference.
What is a tangent?
400
Who sings the song 'circles'?
Post Malone
400
What is the biggest planet in our solar system?
What is Jupiter?
400
A part of a circle that is 'cut off' and does not touch the centre of the circle.
What is a segment?
400
Calculate the area of this circle (to two decimal places).
Remember:
A = pir^2
What is 78.54cm2
500
A straight line the joins two points on the circle's edge but does not go through the centre.
What is Chord?
500
What is 12?
500
What is the name of the ancient invention that used the sun, circles and angles to measure time?
What is a sundial?
500
The formula for the area of a circle?
pir2
500
Use the formula to calculate the area of this circle in metres?
pir^2
What is 78.54m2