Aswimming pool measures 48.6 meters by 26.4 meters. how many grams of water are needed to fill the pool, whose average depth is 7.5 feet? assume the density of water to be 1.0 g/ml. use significant figures. use "e" for scientific notation. do not enter "grams" as part of your answer.

1 ft = 30.48 cm

so

7.5 feet is 7.5×30.48 cm = 228.6 cm

Then the volume of the pool is

... V = LWH = (4860 cm)(2640 cm)(228.6 cm) = 4.86×2.64×0.2286×10³⁺³⁺³ cm³

... = 2.9×10⁹ cm³ . . . . . rounded to 2 significant figures to match 7.5

The mass of water is

... (2.9×10⁹ cm³) × (1 g/cm³) = 2.9×10⁹ g

In the desired form, the number of grams is 2.9e9.

if this is really you s much. i only have 3 points left and i have 2 questions to ask

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square