# 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.
Therefore you need 44 meters of fences, which is 44 fences.

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