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2 years ago

How do you find the area of the shaded region of a circle?

Mathematics

1 answer:

evablogger [386]2 years ago

7 0

First you would use the Pythagorean theorem to find the third side of the triangle or you could say the diameter of the circle.

8^2+6^2=c^2
64+36=c^2
100=c^2
10=c
The diameter equals 10

You want to find the area of the triangle so you would use the formula base time height divided by 2

A= 6*8/2
A= 48/2
A= 24
The area of the triangle is 24 square inches

To find the area of the circle you have to do pie time the radius squared
I’m gonna round pie to 3.14
And I got the radius by dividing 10 by 2

A= 3.14*5^2
A= 3.14*25
A= 78.5 square inches
The area of the whole circle is 78.5 square inches

To find the area of the grey you have to do the area of the total circle minus the area of the triangle which is.

Area of grey= 78.5 - 24
Area of grey= 54.5 square inches

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Amelia spent an hour an a half on a drawing .At the end she said that it was 75% done.How much time do she needs and how much ti

noname [10]

You can think of an hour and a half as 75% itself already because you have 3/4 or three thirty minute periods. So every 1/4 is a 30 minute period, and if you multiply 1/4 by 4 you get 4/4 which you ten can convert to 2 hours or 4, 30 minute time periods. (I’m sorry if I explained this in a very confusing manner). It will take Amelia 2 hours in total to finish her drawing.

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2 years ago

List THE numbers in order from least no greatest-65,34,7,-13,55,62,-7

ivann1987 [24]

-65, -13, -7, 7, 34, 55, 62.
Here’s your answer^
Least to greatest

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2 years ago

Write a polynomial function in standard form with zeros at 0, 1, and 2.

BARSIC [14]

Answer:

Step-by-step explanation:

f(x)=(x-0)(x-1)(x-2)

=x(x^2-3x+2)

or f(x)=x^3-3x^2+2x

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2 years ago

A 2-column table with 7 rows. Column 1 is labeled sample with entries 1, 2, 3, 4, 5, 6, 7. Column 2 is labeled Sample Mean with

Rom4ik [11]

Answer:

(B)136

Step-by-step explanation:

Edg 2020 your welcome luv <3

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2 years ago

Read 2 more answers

A university warehouse has received a shipment of 25 printers, of which 10 are laser printers and 15 are inkjet models. If 6 of

Tanya [424]

Answer:

The probability is 0.31

Step-by-step explanation:

To find the probability, we will consider the following approach. Given a particular outcome, and considering that each outcome is equally likely, we can calculate the probability by simply counting the number of ways we get the desired outcome and divide it by the total number of outcomes.

In this case, the event of interest is choosing 3 laser printers and 3 inkjets. At first, we have a total of 25 printers and we will be choosing 6 printers at random. The total number of ways in which we can choose 6 elements out of 25 is $\binom{25}{6}$ , where $\binom{n}{k} = \frac{n!}{(n-k)!k!}$ . We have that $\binom{25}{6} = 177100$

Now, we will calculate the number of ways to which we obtain the desired event. We will be choosing 3 laser printers and 3 inkjets. So the total number of ways this can happen is the multiplication of the number of ways we can choose 3 printers out of 10 (for the laser printers) times the number of ways of choosing 3 printers out of 15 (for the inkjets). So, in this case, the event can be obtained in $\binom{10}{3}\cdot \binom{15}{3} = 54600$

So the probability of having 3 laser printers and 3 inkjets is given by

$\frac{54600}{177100} = \frac{78}{253} = 0.31$

4 0

2 years ago