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    • Thread Starter
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    Hi I cannot seem to solve this simalarity problem:

    Three drinking glasses are mathematically similar.
    The Capacity of glass A is 200ml and has a height of 9cm.
    The height of glass B is 12.2cm

    Calcuate the capacity of glass B.
    .

    (ive been working hours on this- and frankly Im gettig nowhere- please show me how you worked out the answer)
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    (Original post by Sophie Maywood)
    Hi I cannot seem to solve this simalarity problem:

    Three drinking glasses are mathematically similar.
    The Capacity of glass A is 200ml and has a height of 9cm.
    The height of glass B is 12.2cm

    Calcuate the capacity of glass B.
    .

    (ive been working hours on this- and frankly Im gettig nowhere- please show me how you worked out the answer)
    Glass B is bigger than glass A.

    The length scale factor is 12.2 divided by 9.

    Capacity is a measure of liquid volume.

    The volume of glass B divided by the volume of glass A is the cube of the length scale factor.
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    (Original post by Mr M)
    Glass B is bigger than glass A.

    The length scale factor is 12.2 divided by 9.

    Capacity is a measure of liquid volume.

    The volume of glass B divided by the volume of glass A is the cube of the length scale factor.
    Therefore, it is:

    200x(12.2/9)^3
    • Community Assistant
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    (Original post by Sophie Maywood)
    Therefore, it is:

    200x(12.2/9)^3
    Yes, that's right.

    Did you understand why we needed to cube the length scale factor as that is the key point?
 
 
 

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