It's multiplying by 2 each time 10 x 2 = 20, 20 x 2 = 40, 40 x 2 = 80.
<span>(<span><span>−x</span>+4</span>)</span><span>(<span>x−8</span><span>) is the simplest form.</span></span>
The area is 3.14*r^2
<span>The rotating valve would be in the center of the circular wet patch so if it's spraying in all directions, then 15 ft = radius. </span>
<span>Now plug it in. </span>
<span>3.14 x (15)^2 = 706.5 ft^2</span>
4/10 would be 2/5 in simplest form.
I hope this helps! (:
