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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?
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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Insulation of wall

Jak policzyć izolację ścian?
Calculator allows you to calculate the amount of insulation panels needed to cover the walls of the building using the "light wet" or "dry light" methods.
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Rainwater tank

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Associated ceiling material thickribs

Calculator allows you to calculate the approximate consumption of materials per 1 m2 rib ceiling with ceramic and concrete.
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Financial

Net return on sales (ROS)

Calculator based on the values ​​entered and net profit calculated return on sales ROS. ROS announces net income (after tax), attributable to every penny of products, goods and services.            
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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.            
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The harmonic mean

Calculator based on the entered numbers separated by commas calculate the harmonic mean.