A cube of edge 5 cm is cut into cubes each of edge 1 cm. The ratio of the total surface area of one of the small cubes to that of the large cube is equal to:
Choose one
A) 1:25  B) 1.225  C) 1:52  D) 1:522  E) None
Sol.   Required ratio = 6 * 1 * 1 / 6 * 5 * 5 = 1/25 = 1:25.   1:25nswer 1:25
<result>A</result>
A cube of edge 5 cm is cut into cubes each of edge 1 cm. The ratio of the total surface area of one of the small cubes to that of the large cube is equal to: