<PRE><B>Question 546143</B>
&lt;br&gt;&lt;font face=&quot;Tahoma&quot;&gt;We can assume that this is a round trampoline.&lt;br&gt;

If the diameter is 10 feet, then the radius is half of that, or 5 feet.&lt;br&gt;

Then we just need to use the Area of a Circle formula:&lt;br&gt;

{{{A=pi*r^2}}} where pi is the value 3.1415926....&lt;br&gt;

So we just need to substitute our value of 5 in for r:&lt;br&gt;

{{{A=pi*5^2}}}&lt;br&gt;

{{{A=pi*25}}}&lt;br&gt;

{{{A=25*pi}}}&lt;br&gt;

{{{25*pi}}} feet squared is the EXACT answer, and we surely didn&#39;t need a calulator for this one.&lt;br&gt;

However, a real world answer is probably more appropriate if you were trying to measure the area.&lt;br&gt;

So we will use the value of 3.14 for pi to approximate the area:&lt;br&gt;

{{{A=25*3.14}}}&lt;br&gt;

{{{A=78.5}}}&lt;br&gt;

So the area of our trampoline is about 78.5 feet squared.&lt;br&gt;

I hope this helps!  :)&lt;br&gt;</PRE>