(a) To calculate the total pressure at a depth of 3,800 m below sea level, we can use the formula: Pressure = gh where is the density of the water, g is the acceleration due to gravity, and h is the depth. Given that the density of the water is 1,000 kg/m^3 and the depth is 3,800 m, we can substitute these values into the formula: Pressure = (1,000 kg/m^3) * (9.8 m/s^2) * (3,800 m) Calculating this, we find that the total pressure at a depth of 3,800 m below sea level is approximately 37,240,000 Pa (Pascals). (b) (i) To calculate the pressure at a depth of 3 miles (which is approximately 4,828 meters), we can again use the formula: Pressure = gh Given that the density of the water is still 1,000 kg/m^3 and the depth is 4,828 m, we can substitute these values into the formula: Pressure = (1,000 kg/m^3) * (9.8 m/s^2) * (4,828 m) Calculating this, we find that the pressure at a depth of 3 miles below the surface is approximately 47,295,040 Pa. (ii) To convert the temperature from Fahrenheit to Celsius, we can use the formula: C = (F - 32) *