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Suppose the length and width of the box double. Does the surface area S double? Complete the explanation.

Help!

Suppose The Length And Width Of The Box Double Does The Surface Area S Double Complete The Explanation Help class=

Sagot :

Answer is NO, it does not double.

Step by step.

Equation for surface area (SA) = 2lw+2lh+2wh

If we double the length and width, making them each 2l and 2w, we then have:

2(2l x 2w) + 2(2l x h) + 2(2w x h)
= 2(4lw) + 4lh + 4wh
SA = 8lw + 4lh + 4wh

If the surface area had been doubled, we should get the equation (4lw + 4lh + 4wh) for a doubled surface area.

So no, it is not doubled.
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