500^2 = 250,000cm
therefore 500cm2 is equal to 250,000cm
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500 cm2
The bottom, the top, and two of the sides are each 50 cm2 . The remaining two sides are each 25 cm2 . All together, it takes 250 cm2 of cardboard or wood panel to make the box, and if you paint the entire inside and outside, you have to paint 500 cm2 .
18 cm2
cm2
12 cm2