A rectangular cube has a volume of 10 cubic feet. If a similar cube is twice as long, twice as wide, and twice as high, then the volume, in cubic feet of such cube is?
Choices  Select:
A) 24	B) 48	C) 64	D) 80	E) 100
Lets say the sides of the rectangular cube are x, y and z. Problem states volume is 10.   i.e,   x*y*z = 10 .   If every side is increased twice as before. then new volume is   2x*2y*2z = 8*(x*y*z)  2 *2 *2= 
<gadget id="calculator"> 2 *2 *2</gadget>
<output>8</output>
8*(x*y*z)= 8*10= 
<gadget id="calculator">8*10</gadget>
<output>80</output>
80.   Answer is 80
<result>D</result>
A rectangular cube has a volume of 10 cubic feet. If a similar cube is twice as long, twice as wide, and twice as high, then the volume, in cubic feet of such cube is?
Choices