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stepan [7]
3 years ago
13

What is the area of a regular pentagon with an apothem of 8 centimeters

Mathematics
1 answer:
irinina [24]3 years ago
6 0

Answer:

The of the pentagon is A=232.48cm²

Step-by-step explanation:

This problem bothers on the mensuration of flat shapes, a pentagon

Now given the apothem the area can be expressed as

A=a²n tan (180/n)

where

a = the length of the apothem (in radius)

n = the number of sides= 5 for pentagon

tan is the tangent function calculated in degrees

Substituting our given data we can solve for the area A

A= 8²*5 tan (180/5)

A= 64*5 tan 36

A= 320tan 36

A= 320*0.7265

A=232.48cm²

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3 4 is the answer

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Help needed math 3 - 10 points read closely
inessss [21]
<h2>Hello!</h2>

The answer is:

The answer is the fourth option,

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<h2>Why?</h2>

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\left \{ {{\frac{1}{x}, if x

There, we know that:

We should use the first expression if the value to evaluate is less than -2.

So, for this case, the function will be:

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So, for this case, the function will be:

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7 0
3 years ago
LA = 5x -5<br> B = 3 + 13<br> B<br> Solve for r and then find the measure of B:
topjm [15]

Answer:

x = 9º

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Step-by-step explanation:

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<em>[subtract 3x from both sides]</em>

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<em>[divide each side by 2]</em>

x = 9º

/ / / / / / / / / / / / / / / / / / /

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Step-by-step explanation:

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Read 2 more answers
PLEASE HELP!!on a piece of paper graph f(x)=2•(3)^x.Then determine which answer choice matches the graph you drew.
Dahasolnce [82]

Answer:

Graph B

The graph in the attached figure

Step-by-step explanation:

we have

f(x)=2(3)^{x}

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of the form

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Graph B

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