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What is the answer for pi?
'pi' is an IRRATIONAL number. This means that its decimal digits go to infinity and the digits are not in any regulr order. Super Duper Computers have calculated 'pi' to more than 50 billion places, and stil going. However, for school work , pi is 3.14, 3.1416, 22/7 These are only approximate values. 'pi' has been known from pre-Classical history . It was found that the circulaference of a circle was always directly proportional to its diameter. The Constant of PROPORTION is 'pi'. 'pi' is the Classical Greek samll /lower case letter 'p' and stands for propotion. The circle equations you should learn in school are ;- C = pi d ( circumference and diamter) C = 2 pi r (circumference and radius) A = pi r^(2). ( Area and radius squared).
What math do you learn in grade 9?
It depends on what the school prefers. I would think that 9th graders in a school for kids with learning disabilities normally learn Pre-Algebra, or Algebra 1. For a 9th grade class in a mainstream school, I would think that most 9th graders would learn Algebra 1, Geometry, Algebra 2, or Trigonometry. I would think that Trigonometry is mostly for gifted 9th graders.
How many digits long is pi?
An INFINITE number. Computers have calculated 'pi' to billions of places and still going. However for everyday school learning pi = 3.14 or pi = 22/7 . For more accurate calculations pi = 3.1416 . This is used in science, technology and engineering.
What is the area of a circle with a radius 2.1 centimeters?
the area of a circle is represented by the following equation; A=pi*R2 where A is area, pi is the number pi (3.1415926.......for most high school maths, 3.14 is suitable) and R is the radius. So, square your radius, and multiply it by pi.
What is the pi root of pi?
(pi)(1/pi)=1.4396 ...
