Posted by **y912f** on Wednesday, May 20, 2009 at 8:33pm.

a field 480,000 m^2 is 160 m wide. What length of fencing is needed to enclose it?

i thought you would just have to do A=lw

480,000= l(160)

l= 3000

but the answer is wrong. the correct answer is in the six thousands.

please help

- pre-algebra -
**Ms. Sue**, Wednesday, May 20, 2009 at 8:36pm
Ok -- as far as you went.

You found the length of one side, which is 3,000 meters.

But the question asks for the length of fencing needed to enclose the field. In other words, you need the perimeter of the field.

P = 2L + 2W

P = ??

- pre-algebra -
**y912f**, Wednesday, May 20, 2009 at 8:47pm
ohhh, now i get it....6320m

i thought of that at one point, but didn't try doing it

thanks Ms. Sue :)

- pre-algebra -
**Ms. Sue**, Wednesday, May 20, 2009 at 8:48pm
You're welcome.

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