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Murrr4er [49]
3 years ago
5

A ball has a diameter of 14 inches. Which choice is closest to its surface area? Use 3.14 to approximate pi.

Mathematics
1 answer:
artcher [175]3 years ago
8 0
So we know the formula to find the surface area of a sphere (ball) is:
4 x pi x r^2

to find the radius, divide the diameter by 2 to get:
14 / 2 = 7

now we substitute in the values:
4 x pi x 7^2

simplify:
4 x pi x 49

simplify:
12.56 x 49

simplify:
615.44 inches

the answer is above in bold
hope it helped :)
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Step-by-step explanation:

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VLD [36.1K]

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Step-by-step explanation:

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3 years ago
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gavmur [86]

Answer:

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Step-by-step explanation:

Formula for confidence interval is;

CI = x¯ ± zE

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Add both equations together to get;

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