Posted by JOY on Wednesday, May 25, 2011 at 6:22am.
If a rectangular solid has a volume of 27 and at least one edge the length of 3,which of the following Must be true?
My thoughts lead me to think D is the answer,but I,m not sure??
a.The solid is a cube
b.Exactly 4 edges of the solid have a length of 3
c.Exactly 6 edges of the solid have a length of 3
d.The product of the lengths of at least one pair of edges of the solid must equal 9.

geometry  Henry, Thursday, May 26, 2011 at 1:44pm
V = L*W*H = 27.
3*W*H = 27,
Divide both sides by 3:
W*H = 9. Satisfies choice "d".
V = 3*3*3 = 27. Satisfies choice "a".
Since the solid is a cube, choices a,c,
and d appears to be true.
Try to get a 2nd opinion.
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