Uses of pi
Pi is considered as one of the most important constants in Mathematics
Physics. pi is involved in many formulae from Mathematics, Physics
and Engineering.
• You can
find the circumference of a circle by multiplying pi π (which is
equal to 3.14 or 22 / 7) with the diameter of the circle.
• If you want to calculate the circumference of a circle whose
diameter is 4, its circumference is equal to 3.14*4 = 12.56
• If you do not know the diameter of a circle but know it’s radius,
you can multiply the radius by 2, and therefore find the diameter.
In science, pi is used frequently calculating physical dimensions. For eg., electricity is produced in waves called sin waves. This is related to the constant pi. Also, while calculating the position of stars in skies , astronomers use maths, in which pi is required.
www.4to40.com/science/index.asp?id=100
http://en.wikipedia.org/wiki/pi
http://ualr.edu/lasmoller/pi.html
Bharathi Bhawan mathematics for class 6 by RS Aggarwal
