Posted by **Jacob** on Tuesday, March 29, 2011 at 4:44pm.

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 -
**ashley**, Tuesday, March 29, 2011 at 4:46pm
114

- Math -
**Jacob**, Tuesday, March 29, 2011 at 4:47pm
how did you get 114???

- Math -
**Brian**, Tuesday, March 29, 2011 at 8:03pm
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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