Maths help

Test Preparation SAT Preparation
1

<p><a href="http://img74.imageshack.us/img74/8365/capturei.jpg%5B/url%5D"&gt;http://img74.imageshack.us/img74/8365/capturei.jpg&lt;/a&gt;&lt;/p>

2

<p>here’s how you do it.</p>

<p>area= 4000
so, xy=4000
or, x=4000/y</p>

<p>then,
total rope needed= 4x + y = 4*4000/y + y = 16000/y +y</p>

<p>so the answer is B</p>

3

<p>thanks a lot man</p>