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Geometry Ratio Problem?

please help! there are two regular octagons. the bigger one has 12 ft sides, and the smaller is 8 ft sides. using the ratio of side lengths, find the ratio of the areas and percent increase, without finding the actual areas. please show the steps on how to solve this.

thanks!

2 Answers

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  • ?
    Lv 7
    8 years ago
    Favorite Answer

    Areas are proportional to the squares of lengths

    ratio of side lengths is 12:8 which is 3:2

    ratio of the areas is 9:4

    percent area increase from 8' to 12' is a 125% increase (9/4 = 225%, then subtract 100% to leave the increase)

  • ?
    Lv 4
    4 years ago

    upload the ratio numbers (4:4:7) and divide the fringe via that entire. Take thequotient and multiply via the numbers interior the ratio... for example, 4+4+7 = 15... if 15 is going into the fringe two times, then the climate are 8, 8, and 14... it isn't any longer your suitable answer, however the attitude ought to artwork nicely for you... have relaxing with it

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