The area of the house of a hall is 20 m2 that of a longer wall 10 m2 and of the shorter wall 8 m2, find the edge of the new cube?  Choose the correct choice from the following
A) 45 m3 B) 40 m3 C) 60 m3 D) 600 m3 E) 300 m3
lb = 20 ; lh = 10 ; fh = 8   (lbh)2 = 20 * 10 * 8 =&gt; lbh = 40 m3   ANSWER:40 m3
<result>B</result>
The area of the house of a hall is 20 m2 that of a longer wall 10 m2 and of the shorter wall 8 m2, find the edge of the new cube?