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3 years ago

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Mathematics

2 answers:

alukav5142 [94]3 years ago

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oksano4ka [1.4K]3 years ago

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Question 5 options: What is the approximate area of a circle with a radius of 11 cm? Use 3.14 for π. ______ cm2

kobusy [5.1K]

The area of circle is 379.94 cm².

Step-by-step explanation:

Given,

Radius of circle = 11 centimeters

We have to calculate the area of circle.

We know that;

Area of circle = $\pi r^2$

Here;

π = 3.14 , r = 11

Area of circle = $3.14*(11)^2$

Area of circle = 3.14*121

Area of circle = 379.94 squared centimeters

The area of circle is 379.94 squared centimeters.

Keywords: area, circle

Learn more about circles at:

#LearnwithBrainly

8 0

4 years ago

Sam and her friends are going on a road trip that is 124.8 miles long they have already driven 112.9. How much farther do they h

MatroZZZ [7]

They will have to drive 11.9 more miles

3 0

3 years ago

The teacher gave this pattern to the class: the first term is 5

Alenkasestr [34]

5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100

5 0

3 years ago

64,000 ÷ 110 <br>Estimate :<br>Quotient :<br>Remainder:

Flura [38]

Answer:

640; 581 R 90; 90

Step-by-step explanation:

you can round 110 to 100

64000/100 is simply 640

then you do the real math

the quotient is 581 r 90

this means the remainder is 90

5 0

3 years ago

In a recent survey 75 of the community favored building a police substation in their neighborlhood. If 20 citizens are chosen. W

Anton [14]

Answer:

Mean = 15

Standard deviation = 1.94

Step-by-step explanation:

We are given the following information:

We treat favoring of building a police substation as a success.

P(Success) = 75% = 0.75

Then the number of citizens follows a binomial distribution, where

$P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}$

where n is the total number of observations, x is the number of success, p is the probability of success.

Now, we are given n = 20

We have to find the mean and the standard deviation.

$\mu = np = 20(0.75 ) = 15\\\sigma = \sqrt{np(1-p)} = \sqrt{20(0.75)(1-0.75)} = 1.94$

Thus, the mean of favoring the substation is 15 and the standard deviation of favoring substation is 1.94

7 0

3 years ago