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2 years ago

2. Find the area of a circle with a diameter of 10 feet.

Mathematics

2 answers:

Paha777 [63]2 years ago

8 0

Step-by-step explanation:

d=2r

πr^2

10/2=r

5=r

5^2π

25π=78.5398

Hope that helps :)

FromTheMoon [43]2 years ago

8 0

Answer:

<h2>Area of a circle = πr²</h2>

Here,

r=10/2

r=5

so..

The area

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2 years ago

There are 20 classrooms in the high school with 30 students in each class. How many students are in the school?

Sophie [7]

<h2>Required Answer:</h2>

$\Large{\boxed{\tt{600 \: Students}}}$

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There are 20 classrooms in the high school with 30 students in each class. How many students are in the school?

No. of students

<h2>Given:</h2>

Total no. of classrooms = 20
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3 years ago

Read 2 more answers

The weights of college football players are normally distributed with a mean of 200 pounds and a standard deviation of 50 pounds

Feliz [49]

Answer:

0.3811 = 38.11% probability that he weighs between 170 and 220 pounds.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

$\mu = 200, \sigma = 50$