# Problem solving radius and area.

1. Aug 28, 2011

### davie08

1. The problem statement, all variables and given/known data

A circular garden is surrounded by fencing costing $5 per meter. If the total cost of the fencing is$100, find:

b)the area of the garden

2. Relevant equations

3. The attempt at a solution

all I know is that it would make sense if the whole garden is 20 meters around.

2. Aug 28, 2011

### davie08

i screwed up but i might have this one lol.

Last edited: Aug 28, 2011
3. Aug 28, 2011

### davie08

and would the area be 31.35m

4. Aug 28, 2011

### cmgbruschi

Yes, the radius is 10/pi meters which equals 3.18.

5. Aug 28, 2011

### cmgbruschi

For the area calculation, don't round off the radius. I think you used the 3.18 as the radius in your area calculation. If you use the 10/pi as the radius instead and go through with the area calculation, the answer will be 31.83 rounded to two decimal places.