Franco has enough paint to cover an area of approximately 226 square feet. he needs to paint a cylinder that is 5 feet long. wha
1 answer:
The required radius of the cylinder that can be covered by the paint exists at 3.8 feet.
Franco has enough paint to protect an area of about 226 square feet. He must paint a cylinder that exists 5 feet, and the maximum possible radius of the cylinder that can be covered by the paint exists to be determined.
<h3>What is a cylinder?</h3>The cylinder exists described as a 3D solid that holds two identical bases joined by a curved surface, at a particular distance.
Here, Franco keeps sufficiently paint to cover an area of about 226 square feet.
Area of the cylinder = 226
Area of the cylinder = πr²h = 226
h = 5 feet and π = 3.14
3.14 5
r² = 226
r² = 226/15.70
r = 3.80
Therefore, the required radius of the cylinder that can be covered by the paint exists at 3.8 feet.
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When the variance of a sample of 144 observation is 576 then, the standard deviation of the sample equals 24
The variance is a measure of variability. It is calculated by taking the average of squared deviations from the mean. Variance tells you the degree of spread in your data set
Standard deviation is a statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance.
Given,
The number of samples = 144
The variance = 576
The standard deviation is the square root of variance
The standard deviation = =24
Hence, when the variance of a sample of 144 observation is 576 then, the standard deviation of the sample equals 24
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