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inessss [21]
3 years ago
15

Find the circumference of the circle. R=6 ft please help

Mathematics
1 answer:
AURORKA [14]3 years ago
7 0

Answer:

Circumference = 37.7 ft

Area = 1131.1 ft^2

Step-by-step explanation:

Circumference = 2πr

                         = 2π(6)

                         = 12π

                         = 37.7 ft

Area = πr^{2}

        = π(6)^{2}

        = 36π

        = 113.1 ft^2

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Step-by-step explanation:

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Step-by-step explanation:

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critical\ value = z_{\frac{\alpha}{2} }=z_{0.005}=2.58\\

b) The margin of error (E) is given as:

<h3>E=z_{\frac{\alpha}{2} }*\frac{\sigma}{\sqrt{n} }\\\\\sqrt{n}= z_{\frac{\alpha}{2} }*\frac{\sigma}{E }\\ \\n=( z_{\frac{\alpha}{2} }*\frac{\sigma}{E })^2\\\\Substituting:\\\\n=(2.58*\frac{29}{3} )^2=622.0036\\\\\\n=623(to\ the \ next\ whole\ number)</h3>

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3 years ago
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