what is the formula for calculating area

Suppose a horizontal area A (m 2 ) is supporting a column of liquid of height h (m) and density d (kgm - 3 ..

Let, The mass of the organic compound taken be = W g Increase in the mass of magnesium perchlorate tube = W 1 g Increase in the mass of the KOH tube = W 2 g So, Mass of water formed = W 1 g Mass of carbon dioxide formed = W 2 g ..

Let, The mass of the organic compound be = W g Mass of the precipitate of BaSO 4 = W 1 g From stoichiometry, BaSO 4 = S 1 mol 1 mol 1 molecular mass 1 atomic mass 233 g 32 g Therefore, ..

Let, The mass of silver salt taken for ignition be = W g Mass of silver left behind after ignition = W 1 g We have RCOOAg = Ag1 equivalent 1 equivalent The equivalent mass of silver is 108. Hence, the mass of silver salt that would leave 108 g of residue (equivalent mass of the silver) i..

Let, The mass of the organic compound taken be = W g Volume of air displaced = V 1 mL Atmospheric pressure = P mm of Hg Room temperature, T 1 = t o C = (t + 273)K Aqueous tension at t o C = p mm of Hg Pressure of the dry air, P 1 = (P-p) mm Hg ..

Let, The mass of the organic compound taken be = W g Volume of nitrogen collected = V 1 g Atmospheric pressure = P mm Hg Temperature at which gas is collected = T 1 K Therefore, Pressure of the N 2 gas, P 1 = (P - p) mm of Hg ..

Calculate the approximate area of the figure if the area of each square is 6 square units. => 270 square units or 45 square units or 260 square units or 288 square units..

A swimming pool has a length of 12 yd and a width of 7 yd. Calculate its area. => 84 yd 2 or 14 yd 2 or 74 yd 2 or 168 yd 2..

Calculate the area of triangle ABC in the figure shown, if the area of the rectangle BCDE is 80 in. 2 . => 4 in. 2 or 82 in. 2 or 160 in. 2 or 40 in. 2..

The base and the height of a parallelogram are 18 ft and 8 ft. If both its base and height are decreased by 50%, then calculate its area. => 46 ft 2 or 86 ft 2 or 48 ft 2 or 36 ft 2..