<span><span>a2</span>+<span>a2</span>=<span>8.42</span></span>
<span>2<span>a2</span>=<span>8.42</span></span>
<span><span>a2</span>=<span><span><span>(8.4)</span>2</span>2</span></span>
<span><span>a2</span>=<span>70.562</span></span>
<span><span>a2</span>=35.28</span>
<span>a≈<span>5.9</span></span>
Answer: <em>60°</em>
<em>First let's notice how all of the angles are on a straight line</em>
<em>We know that straight lines must equal to </em><em>180°</em>
<em>Let's take our given angles and add the together </em>
<em>63°+26°+31°=120°</em>
<em>Now we take 180° and subtract is from 120° to give us angle x</em>
<em>180°-120°=60°</em>
Perimeter = 2(10+20) = 60feet
60ft fencing material is needed
Answer:
multiplication
Step-by-step explanation:
