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Kalkulator powierzchni dachu
Jak obliczyć powierzchnię dachu?


Kalkulator umożliwia obliczenie powierzchni dachowych w wariantach : jednospadowy, dwuspadowy, trzyspadowy, czterospadowy.
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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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Number of wallpapers
Jak oszacować niezbędną ilość tapety?
Ile kupić tapety?
Jak obliczyć ilość tapety potrzebną do wytapetowania pokoju?
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Jak obliczyć ilość tapety potrzebną do wytapetowania pokoju?
Calculator to estimate the necessary amount of wallpaper needed to wytapetowania room of the given dimensions.
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Calculator VAT refund for building materials
The calculator calculates the amount of VAT that can be refunded in respect of incurred expenses associated with the purchase of construction materials.
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Checks the calculator is a large number of so-called gay (Happy Number). Number gay is a natural number is defined as follows: Calculate the sum of squares of digits of the number. Repeat this process for the next results as long as we get the number 1 or the results will be repeated. If you have received as a result of one, the original number is the number of gay. Otherwise, a number bleak.
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