Definitions
What is the diameter?
The length of a straight line passing through the center of a circle and connecting two points on the circumference.
What is the radius of a circle with a diameter or 4.5m?
r=2.25m
What symbol represents pi?
π
How many formulas are there to find the area of a circle?
one: a=πr²
How many degrees do 2 circle have?
720°
How do you find the radius?
Divide the diameter by 2, or measure the center of the circle to the side.
What is the circumference of a circle with a diameter of 4cm? (use 3.14 as pi) c=πd
c=12.56cm
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Is the diameter equal to twice the radius?
yes
What shapes measure 360°?
circles and quadrilaterals.
What is Pi? I am not looking for the digits of Pi...
Pi is the ratio of the circumference to the diameter of a circle, or circumference÷diameter and it is irrational.
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How many degrees are in a circle?
360°
How many sides does a circle have?
undefined!
How many lines of symmetry do circles have?
An infinite amount?
What is circumference and how do you find it?
Circumference is the perimeter of a circle. You find the circumference by multiplying pi and the diameter.
What is the area of a circle with a diameter of 6? a=r²π use 3.14 as pi.
a=28.26
What are the first 6 digits of pi?
3.14159
How many digits are in pi?
infinite!
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Define "irrational"
A number that cannot be written as a simple fraction - the decimal goes on forever without repeating.
What is the circumference of a circle with a radius of 6? use 3.14 as pi
c=37.68
What fraction best represents pi?
22/7
On my way to the fair, I met 7 jugglers and a bear, every juggler had 6 cats, every cat had 5 rats, every rat had 4 houses, every house had 3 mouses, every mouse had 2 louses, every louse had a spouse. How many in all are going to the fair?
Just me. The others were coming from the fair!
The official record for the most digits of pi memorized is how many? (According to the Guinness Book of Records)
Closest answer wins
70,000 decimal places