a cubical block of metal weighs 6 pounds . how much will another cube of the same metal weigh if its sides are twice as long ?
"explanation : if you double the sides of a cube , the ratio of the surface areas of the old and new cubes will be 1 : 4 . the ratio of the volumes of the old and new cubes will be 1 : 8 . weight is proportional to volume . so , if the first weighs 6 pounds , the second weighs 6 x 8 pounds = 48 . answer : a ) 48"
multiply(6, multiply(const_2, const_4))