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Rom4ik [11]
3 years ago
5

The endpoints of a diameter of a circle are A(3,1) and B(9,9). Find the area of the circle in terms of pie

Mathematics
1 answer:
andrey2020 [161]3 years ago
4 0

Answer:

The answer is 25\pi units squared.

Step-by-step explanation:

If we find the diameter, we can find the radius by halving the diameter.

We can find the diameter by using the endpoints of the diameter.

The distance formula will give us the length between (3,1) and (9,9).

The distance formula is \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}.

The distance between the x's is 9-3=6.

The distance between the y's is 9-1=8.

The distance between the points is given by \sqrt{6^2+8^2}=\sqrt{36+64}=\sqrt{100}=10.

The radius is therefore \frac{10}{2}=5.

We are asked to find the area of this circle.

The formula for finding the area of a circle is \pi r^2.

Since the radius is 5, then the area in terms of \pi,(pi), is \pi (5)^2=\pi (25).

The answer is 25\pi units squared.

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Find -3/7 divided by -15/1
posledela

Answer:

1/35

Step-by-step explanation:

-3/7 / -15/1 =

3/7 * 1/15 =

3 / 105 =

1/35

6 0
3 years ago
Evaluate 2/4 _ 8z + 2 (z - 5)
SIZIF [17.4K]
Let's see....

Let's first simplify step-by-step.

2/4 - 8z + 2(2-5)

= 1/2 + - 8z + -6

Combine Like Terms:

= 1/2 + -6

= (- 8z) + (1/2 + -6)

=(- 8z) + (1/2 + -6)

= - 8z + -11/2
___________________________________

Our answer:

= - 8z + -11/2

Hope This Helps!!!!!!!!
6 0
3 years ago
What is the measure of the unknown angle?
bulgar [2K]
A. 145
EXPLANATION:
There are 2 angles in the picture.
Both angles mist add up to 180
Simply do 180 - 35 = 145.
Have a good day
8 0
3 years ago
Read 2 more answers
A square pyramid has a height of 9 cm and a volume of 75 cm3. What is the length of a side of the base
defon
Your answer is 5, you use the formula for a pyramid
7 0
3 years ago
The grade you make on your exam varies directly with the number of correct answers you get on the exam.Answering 15 questions co
yuradex [85]

<u>Answer:</u>

The grade you make on your exam varies directly with the number of correct answers. The constant of variation is 5

<u>Solution:</u>

Given, The grade you make on your exam varies directly with the number of correct answers you get on the exam.  

Answering 15 questions correctly will give you a grade of 75 what is the.  

We have to find what is the Constant of variation.

Now, according to the given information, grade  number of correct answer  

Then, grade = c x number of correct answers, where c is constant of variation.

Now, substitute grade = 75 and number of correct answers = 15

\text { Then, } 75=c \times 15 \rightarrow c=\frac{75}{15}=5

Hence, the constant of variation is 5

5 0
3 years ago
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