Can u say this in English please
The number π (pi) is a mathematical constant which is equal to the ratio of a circle's circumference to its diameter. It has a value of π = 22/7
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more variables and numbers.
The number π (pi) is a mathematical constant which is equal to the ratio of a circle's circumference to its diameter. It is given by:
π = 22/7
Find out more on equation at: brainly.com/question/2972832
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4? I'm not sure, since I'm in a rush.
Work:
1. Band 1, 2, 3
2. Band 2, 3, 4
3. Band 3, 4, 1
4. Band 1, 2, 4
It gives you an irrational number, a decimal. It's not a perfect square like

or

.
It’s the last one because 1/2 is way more then 2/5 so I think it would be 1/5<1/2 so the last one