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Leni [432]
3 years ago
5

Work out the area of this circle

Mathematics
2 answers:
Gelneren [198K]3 years ago
7 0

Answer:

50.3

Step-by-step explanation:

slavikrds [6]3 years ago
5 0
50.2cm3

Hope this helps!
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I have no clue to what I even need to do.
Gre4nikov [31]

\bf \textit{arc's length}\\\\ s=r\theta ~~ \begin{cases} r=radius\\ \theta =angle~in\\ \qquad radians\\ \cline{1-1} \theta =\frac{3\pi }{2}\\ s=\frac{5\pi }{2} \end{cases}\implies \cfrac{5\pi }{2}=r\cdot \cfrac{3\pi }{2}

\bf \cfrac{~~\begin{matrix} 2 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}{3~~\begin{matrix} \pi \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ }\cdot \cfrac{5~~\begin{matrix} \pi \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ }{~~\begin{matrix} 2 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}=r\implies \cfrac{5}{3}=r

4 0
3 years ago
Line AB contains points A(-6,1) and B(1,4).
Free_Kalibri [48]

To solve this problem you must apply the proccedure shown below:

1- You have that the equation of the line is:

y=mx+b

Where m is the slope andb is the y-intercept.

2- Based on the information given in the problem, the lines AB andCD are parallel, which means that both have the same slope. Therefore, you can calculate the slope of AB:

m=\frac{y2-y1}{x2-x1}

m=\frac{4-1}{1-(-6)}=\frac{3}{7}

3- Use the coordinates of the point D(7,2) to calculate the y-intercept:

2=\frac{3}{7}(7)+b

4. Solve for b:

b=2-3=-1

5. The equation of the line CD is:

y=\frac{3}{7}x-1

The answer is: y=\frac{3}{7}x-1

6 0
3 years ago
What is (7x3+3)+(4+2) hurry p[ease
allsm [11]
(7x3+3) + (4+2) is 30
3 0
3 years ago
1/3 divided by 4 someone help!!
kozerog [31]

Answer:

1/12

Step-by-step explanation:

1/3 x1/4=1/12

6 0
3 years ago
Read 2 more answers
Someone help on the first and number
Lelu [443]
It is a mixed number because mixed mumbers have higher numerator than the denominator
3 0
3 years ago
Read 2 more answers
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