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Calendar

# Perpetual calendar

jak obliczyć dzień tygodnia na podstawie daty?

Calculator gives what day of the week for the date specified by the user.

Long description

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Calendar

## Date calculator

Calculator allows you to calculate the date, which will be after a specified number of days, months and years from a certain date.

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Calendar

## Calculator seniority in Poland

Calculator to calculate the total length of service after the date of employment or dismissal.

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12987

Life

## Converter phone number

The converter accepts input alphanumeric phone number and converts it to a numeric format.

51578

Building

## Amount of paint necessary to paint the room

Calculator to estimate the amount of paint needed to paint a room by painting a single and double.

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Building

## Calculator floor panels

Calculator based on the dimensions of the area to put the panels and occupancy data on number of panels in one package, calculate how much you have to buy packages of panels to cover the entire room.

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Math

## Number of tetrahedral

Tetrahedral numbers are the natural numbers, for which it is possible to construct a tetrahedron formnego of bullets. They are a special case of the pyramidal numbers.

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Financial

## ROCE - an indicator of the efficiency of investment

The calculator calculates ROCE on the basis of these pre-tax profits, total capital and current liabilities ROCE (called Return On Capital Employed) - an indicator of the efficiency and profitability of the investment, which is the capital of the company involved.