Value of Irrational Number π (Part 1)

In summary, the value of irrational number π, correct to ten decimal places (without rounding), is 3.1415926535. The value used for π in the Rhind papyrus, an ancient Babylonian text written about 1650 B.C., is (4/3)^4. To determine how many decimal places (4/3)^4 agrees with π, you can use long division to compute (4/3)^4 = 256/81 to a few decimal places. This can be done without a calculator. However, it is important to mention this in the original question to avoid confusion.
  • #1
mathdad
1,283
1
The value of irrational number π, correct to ten decimal places (without rounding), is 3.1415926535. By using your calculator, determine to how many decimal places the following quantity [(4/3)^4] agrees with π.

The value used for π in the Rhind papyrus, an ancient Babylonian text written about 1650 B.C. is (4/3)^4.

I was wondering if this question can be answered without a calculator. Can we show that (4/3)^4 in terms of decimal places agrees with pi?
 
Last edited:
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  • #2
Where do you need help with this problem?
 
  • #3
Evgeny.Makarov said:
Where do you need help with this problem?

I was wondering if this question can be answered without a calculator. Can we show that (4/3)^4 in terms of decimal places agrees with pi?
 
  • #4
RTCNTC said:
I was wondering if this question can be answered without a calculator.
Then this should be said in the original question to not make people guess.

RTCNTC said:
Can we show that (4/3)^4 in terms of decimal places agrees with pi?
You can use long division to compute \(\displaystyle \left(\frac43\right)^4=\frac{256}{81}\) to a few decimal places.
 
  • #5
Evgeny.Makarov said:
Then this should be said in the original question to not make people guess.

You can use long division to compute \(\displaystyle \left(\frac43\right)^4=\frac{256}{81}\) to a few decimal places.

The original question has been edited.
 

FAQ: Value of Irrational Number π (Part 1)

What is the value of irrational number π?

The value of irrational number π is approximately 3.141592653589793. It is an infinite decimal number that cannot be written as a ratio of two integers.

Why is π considered an irrational number?

π is considered an irrational number because it cannot be expressed as a finite or repeating decimal. Its decimal representation continues infinitely without ever repeating a pattern.

How is the value of π calculated?

The value of π is calculated using various mathematical methods, such as infinite series, geometric constructions, and numerical integration. The most common method used is the infinite series called the Gregory-Leibniz series.

What is the significance of π in mathematics?

π is a fundamental constant in mathematics that is used in various mathematical and scientific calculations. It is used to find the circumference, area, and volume of circles and spheres, as well as in trigonometric functions.

How many digits of π have been calculated?

As of 2021, the record for calculating the most digits of π is 31.4 trillion digits. However, for most practical applications, only a few digits of π are needed. It is estimated that 39 digits of π are sufficient to calculate the circumference of the observable universe with an error of less than the size of a hydrogen atom.

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