A closed rectangular box has volume 28cm3. What are the lengths of the edges giving the minimum surface area? lengths =
Accepted Solution
A:
For the surface of rectangle to be minimum the the dimensions must be equal. Let the length=width=height=x cm thus the volume will be: xΓxΓx=28 xΒ³=28 x=β28 x=2β7 cm thus the dimensions are such that length=width=height=2β7