The clerk tied a gift box with colored silk, which was 40 cm long, 30 cm wide and 20 cm high. How many trademarks does it take to put a trademark paper on its side?
40x20=800 m2 800x2= 1600 m2
30x20x2= 1200 (m2)
1200+ 1600=2800 (m2)
A: It takes 2,800 square meters of trademark paper to stick the trademark paper on its side.