One litre is equivalent to 1000 centimetres cubed.
0.000626 x 1000 = 0.626
Therefore, it is b) or false.
        
             
        
        
        
True, because energy, frequency, and wavelength are all properties of sound, and sound is an electromagnetic wave. The electromagnetic spectrum encompasses a continuous range of frequencies or wavelengths of electromagnetic radiation, ranging from long wavelength, low energy radio waves to short wavelength, high frequency, high energy gamma rays. 
        
             
        
        
        
 the length of  the red line is 12
        
             
        
        
        
The complete factor from:
2x3 + 6x2 + 10x + 30
2x(x+3) + 10(x+3)
(x+3)(2x+10)
2(x+5)(x+3)
hope this help