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liq [111]
3 years ago
8

Find the area of a circle having a circumference of 23π units. Round to the nearest tenth.

Mathematics
2 answers:
Ulleksa [173]3 years ago
7 0

Answer:

B. 415.5 units2

Step-by-step explanation:

charle [14.2K]3 years ago
4 0

Answer:

\displaystyle 415,5\:units^2 ≈ A

Step-by-step explanation:

In the circumference, 27 represents the diameter, and the radius is <em>half</em><em> </em>the diameter, so take half of it to get 11,5. Then use it in the area formula:

\displaystyle πr^2 \\ \\ π11,5^2 = 132,25π ≈ 415,4756284 ≈ 415,5

I am joyous to assist you anytime.

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Sara and Paul are on opposite sides of a building that a telephone pole fell on. The pole is leaning away from Paul at
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Answer:

a) See figure attached

b) x = \frac{sin(124)}{sin(34)} 80.086 = 118.732 ft

c) h = 35 sin (59) = 30.0 ft

So then the heigth for the building is approximately 30 ft

Step-by-step explanation:

Part a

We can see the figure attached is a illustration for the problem on this case.

Part b

For this case we can use the sin law to find the value of r first like this:

\frac{sin(22)}{35 ft} =\frac{sin(59)}{r}

r= \frac{sin(59)}{sin(22)} 35 ft = 80.086ft

Then we can use the same law in order to find the valueof x liek this:

\frac{sin(124)}{x ft} =\frac{sin(34)}{80.086}

x = \frac{sin(124)}{sin(34)} 80.086 = 118.732 ft

And that represent the distance between Sara and Paul.

Part c

For this cas we are interested on the height h on the figure attached. We can use the sine indentity in order to find it.

sin (59) = \frac{h}{35}

And if we solve for h we got:

h = 35 sin (59) = 30.0 ft

So then the heigth for the building is approximately 30 ft

5 0
3 years ago
Find all rational zeros of P(x)=6x^4-x^3-55x^2+9x+9​
o-na [289]

Answer: x = -3, -1/3, 1/2, 3

Step-by-step explanation:

6 0
3 years ago
If z = 3cis30°, z3 in rectangular form is _____ +_____ i.
oee [108]
The rectangular form is 3c/30=z
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Shelby paid $1.75 for a notebook at a big 75% off sale. What was the original price of the notebook?
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Answer:

$7.00

Step-by-step explanation:

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Solving this for n, we get $7.00

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3 years ago
Which set of ordered pairs is a function?
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