Final Answer:
A gold cube is 170.00 mm long, 20.00 cm wide, and 0.99 m thick. If gold has a density of 19.3 g/cm³, the mass of the gold cube is 6.87 kg.
Therefore, correct option is A) 6.87 kg.
Step-by-step explanation:
The mass of the gold cube is 6.87 kg.
To calculate the mass, use the formula: mass = density × volume. Convert all dimensions to the same unit (meters) and then apply the formula. Ensure consistent units to obtain accurate results.
The mass is determined by multiplying the density of gold (19.3 g/cm³) by the volume of the cube (converted to cm³). The conversion of units is crucial to maintain consistency and arrive at the correct mass value in grams, which can be further converted to kilograms.
Therefore, correct option is A) 6.87 kg.