Question 271147
.
A BOX MEASURES 40CM*50CM*45CM .FIND THE AREA OF THE CARD BOARD REQUIRED TO MAKE 350BOXES
~~~~~~~~~~~~~~~~~~~~~~~~~~~~



        The problem is posed in inaccurate way. It should be retold (reformulated) in other way.

        Simply speaking, they want you find the surface area of one single box and then 

        multiplied the single area by 350.


        The solution by @mananth is fatally wrong. For example, he writes
        "In a rectangle or square there are 8 faces."

        It is the case when the artificial intelligence works perpendicularly to common sense.


        I came to bring a correct solution.



<pre>
The surface area of one rectangular box is 

    2*(ab + ac + bc) = 2*(40*50 + 40*45 + 50*45) = 12100 cm^2.


The surface area of 350 boxes is  350 * 12100 = 4235000 cm^2 = 423.5 m^2.    <U>ANSWER</U>
</pre>

Solved correctly.