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October 21st, 2007, 01:04 PM
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| |  Dimensions of a pen????
A farmer plans to use 25m of fencing to enclose a rectangular pen that has area 63 m^2. Only three sides of the pen need fencing because part of an existing wall will be used for one of the longer sides. Find the dimensions of the pen. |
October 21st, 2007, 01:11 PM
|  | vs Jhevon | | Join Date: Feb 2007 Location: New York, USA
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Quote:
Originally Posted by Dunit0001  A farmer plans to use 25m of fencing to enclose a rectangular pen that has area 63 m^2. Only three sides of the pen need fencing because part of an existing wall will be used for one of the longer sides. Find the dimensions of the pen. | Let the other long side be of length 
Let the other two short sides be of length  each
We want 
and 
can you take it from here? |
October 21st, 2007, 01:24 PM
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I got y=9 |
October 21st, 2007, 01:34 PM
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Quote:
Originally Posted by Dunit0001 I got y=9 | there are two solutions for y, were there not? you should have two sets of solutions since you get a quadratic. y = 9 is one solution for y | | Thread Tools | | | | Display Modes |  Linear Mode | 
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