A cubical block of metal weighs 8 pounds. How much will another cube of the same metal weigh if its sides are twice as long?
Pick one
A) 48	B) 32	C) 24	D) 18	E) 64
For example our cube have a side 1 meter, so we have 1 cubical meter in this cube   and this cubical meter weigth 6 pounds   If we take cube with side 2 meters we will have 8 cubical meters in this cube   8 meters * 8 pounds = 64 pounds   So answer is 64   And similar but more theoretical approach:   if we have sides a and b than they have equal ration with their areas:   a/b = a^2/b^2   and they have equal ration with their volumes:   a/b = a^3/b^3   we have two sides 1/2 so their volume will be in ratio 1/8   weight of one cube * volume of another cube     8 * 8= 
<gadget id="calculator">  8 * 8</gadget>
<output>64</output>
64   So answer is 64
<result>E</result>
A cubical block of metal weighs 8 pounds. How much will another cube of the same metal weigh if its sides are twice as long?