Answer:
96
<u><em>Calculate</em></u>

<u><em>Calculate the power</em></u>

<u><em>Calculate the product or quotient</em></u>
<u><em /></u>
<u><em>Calculate the sum or difference</em></u>
96
<em>I hope this helps you </em>
<em>:)</em>
<u><em /></u>
Answer:
9 feet away
Step-by-step explanation:
40²+b²=41²
1600+b²=1681
b²=81
b=9