What is the surface area of the cube in square units?
1,400 square units
2,400 square units
4,800 square units
8,000 square units
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The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

Combined megan and kelly worked 60 hours. kelly worked twice as many hours as megan. how many hours did they each worked?

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?