Three cubes of metal whose edges are 5, 10 and 15 cm respectively, are melted and one new cube is made. Find the edge of the new cube?	Select the correct option:  A) 28  B) 77  C) 66  D) 16.5  E) 99
53 + 103 + 153 = a3 =&gt; a   = 16.5   Answer: 16.5
<result>D</result>
Three cubes of metal whose edges are 5, 10 and 15 cm respectively, are melted and one new cube is made. Find the edge of the new cube?