Calculate rectangular number 45

These are numbers that can be formed in a rectangle shape

R_{n} = n(n + 1)

R_{45} = 45(45 + 1)

R_{45} = 45(46)

R_{45} = **2,070**

R_{45} = **2,070**

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- number
- an arithmetical value, expressed by a word, symbol, or figure, representing a particular quantity and used in counting and making calculations and for showing order in a series or for identification. A quantity or amount.
- rectangular
- A 4-sided flat shape with straight sides where all interior angles are right angles (90°).
- rectangular number

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