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Math

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A circular garden has an area of 25π m2
If the .
radius is increased by two meters, and fencing is
sold only in one meter sections, how much fencing
is needed to keep out the rabbits?

  • Math - ,

    114

  • Math - ,

    how did you get 114???

  • Math - ,

    The radius of the garden before change=5(since 5x5=25). 5+2=7, which is the new radius of the garden.
    To get the amount of fencing needed, you first need to find the diameter and the resulting circumference.
    D=2r, r=7, therefore D=14. C=D¥ð, so the circumference is 14¥ð.
    That's about 43.9 meters.
    Therefore you need 44 meters of fences, which is 44 fences.

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