A rectangular grassy plot has a length of 146 m and a breadth of 98 m . It has a 2 m wide gravel path, that runs along the inside of the perimeter. Find the area of the gravel path.
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50 ml of water sample requires 5 ml of 0.01N HCl for the end point using phenolphthalein and further 5 ml for methyl orange indicator . Find the type and total alkalinity of water .write the following numbers in the Interational system of numeration of this 5,420,368
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