<p>Page 399 # 11</p>
<p>I need an explanation on how to do this</p>
<p>Page 400 # 16</p>
<p>I need an explanation on how to do this</p>
<p>Page 400 # 17</p>
<p>I need an explanation on how to do this</p>
<p>Page 400 # 18</p>
<p>I need an explanation on how to do this</p>
<p>Page 401 # 19 and 20</p>
<p>I need an explanation on how to do these</p>
<p>Post the questions themselves and I’d be more than happy to assist.</p>
<p>I actually just need help with 2, but they both have drawings that I can’t do on the computer. </p>
<p>But, there is a triangle with two sides 10√2 and a rectangle in the triangle.</p>
<ol>
<li>In right triangle ABC above EF || AC and F is the midpoint of BC. What is the area of the shaded rectangular region?</li>
</ol>
<p>25
25√2
50
50√2
100</p>
<ol>
<li>The pyramid shown above has altitude h and a square base of side m. the four edges that meet at V**, the vertex of the pyramid, each have length e. If e=m, what is the value of h in terms of m?</li>
</ol>
<p>In the drawing there is a pyramid with base m, edge e, high h, and vertex V.</p>
<p>Answers:</p>
<p>m/√2
m√3/2
m
2m/√3
m√2</p>
<p>Thanks, Arachnotron</p>
<p>ill explain to you how you should approach these so you can figure them out easily for yourself (partially for your own benefit, partially because I’m feeling lazy, mostly the latter) </p>
<p>for the first one you should notice every triangle is a 45 45 90, and the hypotenuses of 4 of them are 5√2 , you can use this information to easily solve this problem </p>
<p>for the second, this ones a bit tougher, draw a triangle within the base to find a length of a diagonal from the altitude to the diagonal going to V than use the triangle with the altitude the side going to V and your drawn diagonal & pythagorean theorem to solve this problem </p>
<p>(answers should be 50 & m/√2)</p>