A hexagonal pyramid has a volume of 144 cubic millimeters and a height of 4 millimeters. What is the area of the base of the pyramid? (Hint: Label the parts you know. Draw a picture if necessary)
This is confusing T^T

Answers

Answer 1

Answer:

The area of the base of the pyramid is 109.2 mm.

Step-by-step explanation:

The area of the base of a hexagonal pyramid is given by the area of a hexagon:

[tex] A_{b} = \frac{P*a}{2} [/tex]  

Where:

P: is the perimeter

a: is the apothem

We need to find the perimeter and the apothem.

The perimeter is equal to:  

[tex] P = 6*s [/tex]

Where:

s: is the side of the pyramid

And the apothem is:

[tex] a = \frac{\sqrt{3}}{2}*s [/tex]

So, to calculate the apothem and the perimeter we need to calculate the side of the pyramid. We can find it from the volume of the pyramid:

[tex] V = \frac{\sqrt{3}}{2}*h*s^{2} [/tex]  

Where:

h: is the height = 4 mm  

V: is the volume = 144 mm³                                  

Then, the side is:  

[tex] s = \sqrt{\frac{2V}{\sqrt{3}*h}} = \sqrt{\frac{2*144}{\sqrt{3}*4}} = 6.5 mm [/tex]

Now, we can find the perimeter and the apothem.

[tex] a = \frac{\sqrt{3}}{2}*s = \frac{\sqrt{3}}{2}*6.5 = 5.6 mm [/tex]

[tex] P = 6*s = 6*6.5 = 39 mm [/tex]

Finally, the area is:

[tex] A_{b} = \frac{P*a}{2} = \frac{39*5.6}{2} = 109.2 mm^{2} [/tex]

Therefore, the area of the base of the pyramid is around 109 mm.

I hope it helps you!


Related Questions

Help MOI Again PLEASE lol

Answers

Answer:

-5a + 20a +-4a - -6= -16

Answer- a= -2

Step-by-step explanation:

Hope this helps!

Answer:

-2

Step-by-step explanation:

-5a+20a+-4a_-6=-16

20a-9a+6=-16

11a+6=-16

11a=-16-6

11a=-22

a=-22/11

a=-2

Write your answer as a decimal rounded to the nearest hundredth

Answers

Answer: 0.17

Step-by-step explanation: There are 5 other letters rather than A. So it would be 1/5 and 1 divided by five is 0.2 which is probally 0.20.

Hope it helps have an wonderful day

0.17 i hope this helps

please answer correctly! This has 2 slides of questions but please answer correctly. I need this <3 :)

Answers

Answer:

About 6,810,000 results (0.79 seconds)  

wait a moment and scrole down!

your question will be answered

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Why was the destructa year.

Us h?

Afalo

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The history

The sum of two numbers is 16 . When the second number is subtracted from the first​ number, the difference is 8. Find the two numbers.

Answers

8 and 8 kuz 8+8 is 16 and 16-8 is 8 hope this helps plz rate fairly and mabe give branlyest ;)

Answer:

The answer is 8 both ways in and out

Step-by-step explanation:

PLEASE HELP!!!!! DEU IN A FEW HOURS

Answers

The answer is H. 133

88+25-58-45+32+91=133
The answer is 133 I’m pretty sure

please help me. I don't understand.

Answers

Answer: 28.8

Step-by-step explanation:sorry if I’m wrong

ok so you need to multiply the two numbers together and then divide your answer by 3!

Pls help me............

Answers

Answer:for the first page #1 is D

#2 is B

Step-by-step explanation:

i dont know number three yet

#3 is B
#7 is A
#8 is C

(Btw this is not a QOTD, but I might do another one later)

Mr. Greer’s checking account at the start of November is 995 dollars. The activity in his check register for the first two weeks of November is shown below.

What was the balance of Mor. Greer’s check register after the transaction on November 14?

No LINKS please, and thanks!

Answers

The answer is C $550

Sophie has a doll collection with 36 dolls. She decides to sell s dolls to a museum and has r dolls remaining.

What is the independent variable?

Answers

lol xd i jejuducyycya udhydggd 8737377 dhhdhxy

Jeremy earned $1365 after working for half of a year. He expects to continue working for the same number of hours each month, at the same pay rate.

a) How much will he earn in total after working for a year? Show two different ways of arriving at the answer.

b) If he works 10 hours a week, what is his hourly rate of pay?
Show your thinking.

Answers

Answer:

A. $2730 B. Information missing

Step-by-step explanation:

A. first way is by simply multiplying $1635 by 2.

second way is by finding 1/4 income a year by dividing $1635 by two, then multiply by 4.

It may not be correct but i hope it helped.

who ever gets this will get a brainlest

Answers

Answer:

the answer is 40%

Answer: 40%

40% percent is the answer

Help please ASAP!! I will give brainliest!

Answers

Answer:

3/5      1/10

Step-by-step explanation:

1/5 divided by 1/3 is 1/5 times 3 which is 3/5

1/2 divided by 5

= 1/2 divided by 5/1

=1/2 times 1/5

=1/10

Answer:   1) 3/5     2) 1/10

Step-by-step explanation:

1) 1/5 divided by 1/3

then you take the reciprocal so the equation is now 1/5 times 3/1

and you get an answer of 3/5

2) 1/2 divided 5/1 (you put the one under the 5 cuz it's a whole number)

Take the reciprocal of the second fraction and flip the numerator and denominator so you get 1/5.

Then, do 1/2 x 1/5 which equals 1/10.

Hope that helped! :)

Plzzzzz help me I might lose my mind if I don’t get this done!
I already did number 1 and 2 I just need the rest. The dimensions are 5 inches top and bottom and both sides are 6 1/2 inches.

Answers

Answer:

i cant see it

Step-by-step explanation:

Answer:

we pop out at yo party, im wit the gang

Step-by-step explanation:

who ever gets this right will get a brainlest

Answers

Answer:

20%

Step-by-step explanation:

750 - 20% is 600

so it's D

The answer is 20%. ITS THE LAST ONE

What is the radius, in centimeters, of a circle that has a circumference of 16π?

8
16
32
64

Answers

Answer: The radius equals 8cm

Answer:

8

Step-by-step explanation:

The circumference of a circle is equal to  π , which is a number  ≈ 3.14 , multiplied by the diameter of the circle.

Therefore,  C  =  π d .

We know that the circumference,  C , is  16 π , so we can say that:

16 π  =  π d

We can divide both sides by  π  to see that  16  =  d .

We now know that the diameter of the circle is  16 .

We also know that the diameter has twice the length of the radius.

In equation form:  2 r  =  d

2 r  =  16

r  =  8

Note that since  2 r  =  d , the equation  C  =  2 π r  holds and can be used in place of C  =  π d .

Help please and thank you

Answers

Answer:

A) [tex]A=\pi r^2[/tex]

Step-by-step explanation:

Answer:

Its A

Step-by-step explanation:

I really don't know how to explain it. But I hope I helped :)

Help me thanks
Xxxxxxxxxx

Answers

Answer:

A : 6.5

Step-by-step explanation:

Answer :

A: 6.5

Step by step explanation

I've been stuck on this equation for so long! I need help
2/3 (9 + x) = - 5(4 -x)

Answers

the answer to your equation is x=6

Can someone help?????

Answers

The answer is 3 points

A smaller triangle is four times smaller than a larger triangle. If the smaller triangle has a measurement of 10.47 mm for its longest side. What is the measurement of the longest side of the larger triangle?
A. 40.78 cm
B. 40.88 cm
C. 41.78 cm
D. 41.88 cm

Answers

It’s D. 41.88 pls give brainliest
It’s D. 41.88 ur welcome

please answer correctly. I need this right now <3

Answers

U literally do 9•5.....

ayo if u help ima mark brainlistt and it no that hard ig

Answers

Jesus is always the answer
1+1 = 2 2+2 = 4 4+4Can you just subtract the number that you did after one of them and a good night supper but I took them

Solve the following equation: x + 25 = 30
dont comment just for points cuz i will do the same to u

Answers

Answer:

5

Step-by-step explanation:

Answer:

X + 25 = 30

X + 25-25 = 30 - 25 = 5

Step-by-step explanation:

The band Leeward charges different prices for its concert tickets based on a concert-goer's age. The total cost, in dollars, of tickets for a adults and c children is 12a+6c. Edgar bought tickets for 4 adults and 6 children.
How much did Edgar pay for tickets?
$

Answers

Answer:

$84

Step-by-step explanation:

Rectangle A’B’C’D’ is similar to rectangle ABCD, as shown on the coordinate plane
below.

Which sequence of transformations maps rectangle
ABCD onto rectangle A’B’C’D’?
A. A translation 8 unit to the left, then a dilation by
a scale factor of 1/2
with a center of dilation at the origin
B. A reflection over the y-axis, then a dilation by a
scale factor of 1/2
with a center of dilation at the origin.

C. A dilation by a scale factor of 1/2
with a center of
dilation at the origin, then a 90° counterclockwise
rotation about the origin
D. A 90° counterclockwise rotation about the origin,
then a dilation by a scale factor of 1/2
with a center of

dilation at the origin.

Answers

Answer:

B

Step-by-step explanation:

Its is a reflection over the y-axis

Please help me with this 7th-grade math work.

Answers

The answer is H........

Answer:

H and F

Step-by-step explanation:

Starting with tails is wrong so we have Heads and H and F are the same -.-

HELP QUICK... I NEED THIS FOR MATH

Answers

113,000-71,500

41,500
Assets - liabilities = net worth
80750 - 64100 = $16650

A. k/5 = 3; k=
B. 3.5d = 70; d=
C. 4 1/2 = 1 1/2n; n=

Solve each equation.

Answers

Answer:

Step-by-step explanation:

A. k/5 = 3:  Isolate k by multiplying both sides of this equation by 5:

k = 15

       

B. 3.5d = 70;  Divide both sides by 3.5, obtaining d = 20

C. 4 1/2 = 1 1/2n;   Rewrite 4 1/2 and 1 1/2 as improper fractions:

  9/2 = (3/2)n.  Now multiply both sides by (2/3):  3 = n

Answer:

I think C

Step-by-step explanation:

Because when you calculate it it shows up to be honest if it’s wrong I’m very sorry ☹️ Oops nvm I was suppose to solve it all LOL

Ill mark brainliiest

Answers

Do NOT open links given to you!
√8 = 2 units, 2 units

√7 = √5 units, √2 units

√5 = 1 unit, 2 units

3 = 2 units, √5 units

pleaase help withhh tt
his

Answers

decimal: 0.25
percent: 25%

Answer:

Decimal: 0.25

Percentage: 25%

Step-by-step explanation:

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