Definitions
Problem Solving
Grab-Bag
Trick Questions
Circles
100

What is the diameter?

The length of a straight line passing through the center of a circle and connecting two points on the circumference.

100

What is the radius of a circle with a diameter or 4.5m?

r=2.25m

100

What symbol represents pi?

π

100

How many formulas are there to find the area of a circle?

one: a=πr²

100

How many degrees do 2 circle have?

720°

200

How do you find the radius?

Divide the diameter by 2, or measure the center of the circle to the side.

200

What is the circumference of a circle with a diameter of 4cm? (use 3.14 as pi) c=πd

c=12.56cm

200

Congratulations!!!

3 bonus merits on Epraise for each of your team

200

Is the diameter equal to twice the radius?

yes

200

What shapes measure 360°?

circles and quadrilaterals.

300

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.

300

Congratulations!!!

Everyone on your team wins...

5 merits each on Epraise!

300

How many degrees are in a circle?

360°

300

How many sides does a circle have?

undefined!

300

How many lines of symmetry do circles have?

An infinite amount?

400

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.

400

What is the area of a circle with a diameter of 6? a=r²π use 3.14 as pi.

a=28.26

400

What are the first 6 digits of pi?

3.14159

400

How many digits are in pi?

infinite!

400

Congratulations!!!

Everyone on your team wins...

A rice cake!

500

Define "irrational"

A number that cannot be written as a simple fraction - the decimal goes on forever without repeating.

500

What is the circumference of a circle with a radius of 6? use 3.14 as pi

c=37.68

500

What fraction best represents pi?

22/7

500

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!

500

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