29 points!!!Find the length of ac Ab=36 cm express your answer in pi

Mathematics

2 answers:

FromTheMoon [43]4 years ago

5 0

Mistake on my part ignore this

Bess [88]4 years ago

3 0

Ab=36(diameter of the circle)
Since ap and pb are radius.
ap=pb=36/2=18
Then construct a perpendicular line from point C to a point D on the ab.
The Ange cpb=30 and angle cup is a right triangle.
Then using 30-60-90 rule, 2x=pc=18(it is also a radius)
So x=cd=9
And pd=9*root of 3=9root of 3
ad=18+9root of 3
cd=9
Angle cda=90
So according to Pythagoras theorem
P²+B²=H²
So, ac²=9²+(9 root of 3)
I think it will help you.

You might be interested in

-18.3 = b + -8.3<br> b =

Sauron [17]

Answer:

Here,

-18.3=b+ -8.3

-18.3+8.3=b

-10=b

the value of b is -10.

3 0

3 years ago

The perimeter of a rectangle is 16.6km, and its area is 13.42km2. Find its length and width. length : km width : km

Otrada [13]

Answer:

l=5.12 & w=2.62

Step by step explanation:

A=l×w

13.42=lw

w=13.42/l

$p = 2(l + w) \\ 16.6 = 2(l + \frac{13.42}{l} ) \\ 16.6 = 2( \frac{ {l}^{2} + 13.42}{l}) \\ 16.6 = 2(l + 13.42) \\ 16.6 = 2l + 26.84 \\ 2l = 26.84 - 16.6 \\ 2l = 10.24 \\ l = \frac{10.24}{2} \\ l = 5.12km$

Since you have found the value of the length you can find the value.of the width.

$w = \frac{13.42}{l} \\ w = \frac{13.42}{5.12} \\ w = 2.62km$

5 0

4 years ago

Which inequality pairs with ys-2x-1 to complete the

Ghella [55]

Answer:

the answer is the last option, y > 2x-2

6 0

3 years ago

The area of a circle is 81pie square feet. What is the length of the radius? What is the length of the diameter? Please show ste

Anna35 [415]

$\bf \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ A=81\pi \end{cases}\implies 81\pi =\pi r^2\implies \cfrac{81\pi }{\pi }=r^2\implies 81=r^2 \\\\\\ \sqrt{81}=r\implies \boxed{9=r}~\hspace{10em}\stackrel{\textit{diameter = twice the radius}}{18}$