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Mandarinka [93]
3 years ago
10

A basketball team wants to paint half of a free-throw circle grey. If the radius of the free-throw circle is 5.4 feet, what is t

he area that will be painted grey? Use 3.14 for , and round to the nearest square foot.
Mathematics
1 answer:
FromTheMoon [43]3 years ago
5 0

Answer:

The area which would be painted grey will be "47.7812 ft²".

Step-by-step explanation:

The given values are:

Radius of circle, r = 5.4 feet

Value of pi, π = 3.14

As we know,

Area of Semicircle = \frac{\pi r^2}{2}

On putting the values in the above formula, we get

                               = \frac{3.14\times (5.4)^{2}}{2}

                               = \frac{3.14\times 29.26}{2}

                               = \frac{91.5624}{2}

                               = 45.7812 \ ft^2

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A random sample of adult female reaction times has a sample mean of x¯=394.3 milliseconds and sample standard deviation of s=84.
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Step-by-step explanation:

Given that mean (μ) = 394.3 ms and standard deviation (σ) = 84.6 ms.

The empirical rule states that for a normal distribution:

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one standard deviation = 394.3 ± 84.6 = (309.7, 478.9). 68% falls within 309.7 and 478.9 ms

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Answer:

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A fraction can be found be taking the current amount over the total amount:

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3 years ago
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