The area of the floor of a room is 20 m2 that of a longer wall 15 m2 and of the shorter wall 12 m2, find the edge of the new cube?	Choose the correct choice from the following answers
A) 50 m^3  B) 60 m^3  C) 70 m^3  D) 80 m^3  E) 100 m^3
Explanation:   lb = 20 ; lh = 15 ; fh = 12   (lbh)2 = 20 * 15 * 12 =&gt; lbh = 60 m^3   60 m^3)
<result>B</result>
The area of the floor of a room is 20 m2 that of a longer wall 15 m2 and of the shorter wall 12 m2, find the edge of the new cube?