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23 February, 02:12

The figures are similar. 15:18 or 5:6. Find the ratio of their perimeters and the ratio of their areas.

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  1. 23 February, 03:30
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    Ratio of perimeter (linear measure) is the same as the scale factor (5:6).

    Ratio of area (unit squared) is the square of the ratio, namely 5^2:6^2=25:36

    Ratio of volume (unit cubed) is the cube of the ratio, namely 5^3:6^3=125:216
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