# constant ()

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The **constant ()** block is a reporter block in Extra Mathematics that reports the value of various constants.

## Dropdown

Constant | Notes | Default |
---|---|---|

π | Reports pi (the ratio of a circle's circumference to it's diameter) | Yes |

τ | Reports tau (2 times pi) | No |

ϕ | Reports phi (the golden ratio, or (1 + sqrt(5))/2) | |

e | Reports euler's number (e) |

## Workaround

This block can be worked around by using exact values for each constant. e can be replicated by using the existing e reporter block, or by using the () of () operators block with e^ selected and 1 as the number. π can be replicated by using the π reporter block. τ can be replicated by multiplying the result of the π option by 2. Variables can be used if the values are used in multiple places in the code.

//pi π::operators reporter //tau ((π::operators) * (2)) //phi (((1) + ([sqrt v] of (5))) / (2) [1.618034]::operators reporter //e e::operators reporter ([e ^ v] of (1))