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Mathematics

1 answer:

liraira [26]2 years ago

8 0

Answer:

615.75216 ft

Step-by-step explanation:

diameterd=2r

d=2×14

d=28

circumferenceC=2πr

C=2×π×14

C=28π

C=87.9645943

areaA=πr2

A=π×142

A=196π

A=615.75216

Hope this helps~

All the love, Ya boi Fraser :)

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We are given that a sample of 40 times yielded an average time of 23.92 minutes, with a sample standard deviation of 6.72 minutes.

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So, a 98% confidence interval for the population mean, $\mu$ is;

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