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28 November, 08:54

A computer chip 0.32 cm thick is made up of layers of silicon. If the top and bottom layers are each 0.03 cm thick and the inner layers are each 0.02 cm thick, how many inner layers are there? A. 13B. 15C. 16D. 52E. 64

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  1. 28 November, 09:02
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    a. 13

    Step-by-step explanation:

    Choice A = 13 layers is correct answer.

    Outer thickness = the top and bottom layer are 0.03 + 0.03 = 0.06 cm thick

    Total thickness = 0.32 cm

    Inner thickness = Total thickness - outer thickness = 0.32 - 0.06 = 0.26 cm

    Each inner layer is 0.02 cm thick

    No of inner layers = 0.26/0.02 = 13 layers

    There are 13 layers of 0.02 cm thickness each.
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