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Surface area of the box = 2(lb + bh + lh)
Where l = 20 cm, b = 30 cm, h = 8 cm
=> A = 2[(20)(30) + (30)(8) + (20)(8)]
= 2(600 + 240 + 160)
= 2(1000)
= 2000 cm^2
= 0.2 m^2
Hence, she has enough paper.
Where l = 20 cm, b = 30 cm, h = 8 cm
=> A = 2[(20)(30) + (30)(8) + (20)(8)]
= 2(600 + 240 + 160)
= 2(1000)
= 2000 cm^2
= 0.2 m^2
Hence, she has enough paper.
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