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dantwanlarosa85
27.09.2019 •
Mathematics
Astorage box is 60 cm long, 45 cm wide and 30 cm high. the lid is 10 cm high. what is the surface area of the box and it's lid?
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Ответ:
ok, so then we gots
10+30=40
length is 60
width is 45
height is 40
SA=2(LW+LH+WH)
SA=2(60*45+60*40+45*40)
SA=2(2700+2400+1800)
SA=2(6900)
SA=13800 square cm
Ответ: