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22 December, 01:51

Each dimension of a cube has been increased to twice its original size. If a new cube has a volume of 64000 cubic centimetres what is the area one face of the original cube

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Answers (2)
  1. 22 December, 04:25
    0
    400 cm²

    Step-by-step explanation:

    The new volume = 64,000 cm³

    New length = (new volume) ⅓ = (64,000) ⅓ = 40cm

    Old length = 40 cm : 2 = 20 cm

    Area = length² = 20² = 400 cm²
  2. 22 December, 04:44
    0
    400 cm²

    Step-by-step explanation:

    (side2/side1) ³ = Volume2/Volume

    2³ = 64000/X

    X = 64000/8

    X = 8000

    Volume = side³

    8000 = side³

    Each side = 20

    Area of a face = side²

    = 20² = 400 cm²
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