Answer:
[tex]330\ kg[/tex]
Step-by-step explanation:
Remember that
1 kg=1,000 g
1 m= 100 cm
The volume of the granite countertop in cubic centimeters is equal to
[tex]V=(100)(300)(4)\ cm^{3}[/tex]
The density in kg per cubic centimeter is equal to
[tex]D=2.75(\frac{1}{1,000}) \frac{kg}{cm^{3}}[/tex]
Multiply the density by the volume
[tex]2.75(\frac{1}{1,000})(100)(300)(4)[/tex]
[tex]2.75(120)=330\ kg[/tex]