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Историческую версию Land Area Calculator Herons можно получить на Android
Калькулятор площади земли, используя формулу Герона
This app will calculate land area in square feet, square meter, Decimal and in Katha using well known Heron's formula.
This app can be used to measure land area in any country including Australia, NZ, Canada, USA, Bangladesh, India, etc.
Input parameters must be supplied in meter only.