You will need:
Draw a circle on your card. The exact size doesn't matter, but let's use a radius of 5 cm.
Use your protractor to divide the circle up into twelve equal sectors.
What will be the angle for each sector? That's easy - just divide 360° (one complete turn) by 12:360° / 12 = 30°
So each of the angles must be 30°
Step 2Divide just one of the sectors into two equal parts - that's 15° for each sector.You now have thirteen sectors - number them 1 to 13:
Step 3Cut out the thirteen sectors using the scissors: Step4Rearrange the 13 sectors like this (you can glue them onto a piece of paper):Now that shape resembles a rectangle:
Step 5What are the (approximate) height and width of the rectangle?Its height is the circle's radius: just look at sectors 1 and 13 above. When they were in the circle they were "radius" high.
Its width (actually one "bumpy" edge), is half of the curved parts along the edge of the circle ... in other words it is about half the circumference of the original circle. We know that:
Circumference = 2 × π × radius
And so the width is:
Half the Circumference = π × radius
And so we have (approximately):
With a radius of 5 cm, the rectangle should be:
Divide by the radius (5 cm) to get an approximation for π
Put your answer here:"Rectangle"
WidthDivide by 5 cm
≈ π
Remember π is about 3.14159... how good was your answer?
Note: You could probably get a better answer if you:
about 1,241,100,000,000 but all i know is 3.1415926535987932384
In 499ce, he is in 23rd years old .he will find out the approximation of pi
There is no recorded single discoverer of the value of pi. Although, it has been recorded that the Egyptians were aware of pi.
To find the roots (solutions) of a quadratic equation.
If you mean the value of pi then its value is of a circle's circumference divided by its diameter and pi is an irrational number that can't be expressed as a fraction.
about 1,241,100,000,000 but all i know is 3.1415926535987932384
PI stands for polarization index. We need to find IR value(IR1) for 1min and again find the IR value(IR2) for 10min. PI=IR2/IR1
In 499ce, he is in 23rd years old .he will find out the approximation of pi
There is no recorded single discoverer of the value of pi. Although, it has been recorded that the Egyptians were aware of pi.
You cannot find the "PI" of anything Pi is a set numerical value, PI = 3.14159265358979323846… (It goes on forever) But in geometry we consider Pi to equal 3.14
To find the roots (solutions) of a quadratic equation.
The first to find the value in pi were the Babylonians and Egyptians.
William Jones introduced the Greek character for pi in 1707. It was the initial letter in Greek for the word perimeter. Previously mathematicians wrote perimeter/diameter to express pi.
If you mean the value of pi then its value is of a circle's circumference divided by its diameter and pi is an irrational number that can't be expressed as a fraction.
douchbag
Pythagoras
just divide 22 by 7