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9 May, 14:20

A storage 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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  1. 9 May, 14:48
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    Assuming the lid sits on top of the box and that's it

    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
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