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Naily [24]
2 years ago
5

Find the circumference of the circle in terms of pi.

Mathematics
2 answers:
dem82 [27]2 years ago
8 0
The answer is D. 78 pi inches
WITCHER [35]2 years ago
3 0
<h2>Answer:</h2>

Option: D is the correct answer.

 The circumference of the circle in terms of pi is:

                 D.   78π in.

<h2>Step-by-step explanation:</h2>

We know that for a circle with radius r the circumference of the circle is given by the formula :

              Circumference(C)=2\pi r

Here in the given figure we have: Radius (r)= 39 in.

Hence, the circumference of the given circle is calculated as:

C=2\pi\times 39\\\\\\C=(39\times 2)\pi\\\\\\C=78\pi

Hence, the circumference of circle is:

                     78π in.

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Answer:

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The x-intercepts occur for values of x where f(x) = 0.

f(x) = 0 when the nominator (x^{2}  - 16) = 0.

x^{2} -16 is a difference of squares,
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A rectangular parking area measuring 5000 ft squared is to be enclosed on three sides using​ chain-link fencing that costs ​$5.5
kaheart [24]

Answer:

Dimensions: 75.3778 ft and 66.3325 ft

Minimum price: $1658.31

Step-by-step explanation:

Let's call the length of the parking area 'x', and the width 'y'.

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x * y = 5000

-> Price of the fences:

P = 2*x*5.5 + y*5.5 + y*7

P = 11*x + 12.5*y

From the first equation, we have that y = 5000/x

Using this value in the equation for P, we have:

P = 11*x + 12.5*5000/x = 11*x + 62500/x

To find the minimum of this function, we need to take its derivative and then make it equal to zero:

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x = 250/sqrt(11) = 75.3778 ft

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