Calculate the total surface area of the outside of an open box which has a base measuring 8 by 4 and a height of 5 .
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Answer:
Step-by-step explanation:
The surface area of the box=lateral surface area of the box+area of its base
=2(l+b)h+lb
=2*0.5(1+0.8)+1*0.8
=1.8+0.8
=2.6
Therefore the surface area of the box is 2.6
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