A line graph, or line chart, shows info as a series of data points that are connected by line segments.
Answer:
18
Step-by-step explanation:
81π=πr^2
r= 9,-9
9+9=18
P(z ≤ 0. 82) or p-value corresponding to z ≤ 0. 82 comes to be approximately 80%.
<h3>What is a z-score?</h3>
Z-score indicates how much a given value differs from the standard deviation.

Where
= mean
=standard deviation
P(z ≤ 0. 82) means the p-value corresponding to z≤ 0. 82.
From the standard normal table
P(z ≤ 0. 82) ≈80%.
Hence, P(z ≤ 0. 82) or p-value corresponding to z ≤ 0. 82 comes to be approximately 80%.
To get more about the z-score visit:
brainly.com/question/25638875