Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 92,897

Hi;

I am getting 6.20403 using the formula I gave you, so I would say they are the same.

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

**Online**

**rogerwaters****Member**- Registered: 2013-11-02
- Posts: 85

Alright, sounds good. But could you write out the second equation with the formula you gave me so I could present it completely as my work?

After that, we'll move on to number 3

I think there are things in my story that have helped my creativity. Your father being killed, for instance, is one of the best things that could happen to a kid if he's going to write poetry or songs.

-Roger Waters

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 92,897

That is is up there.

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

**Online**

**rogerwaters****Member**- Registered: 2013-11-02
- Posts: 85

Alright thanks! So let's move to number 3

I think there are things in my story that have helped my creativity. Your father being killed, for instance, is one of the best things that could happen to a kid if he's going to write poetry or songs.

-Roger Waters

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 92,897

I am getting 6 for that.

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

**Online**

**rogerwaters****Member**- Registered: 2013-11-02
- Posts: 85

What formula did you use?

I think there are things in my story that have helped my creativity. Your father being killed, for instance, is one of the best things that could happen to a kid if he's going to write poetry or songs.

-Roger Waters

Offline

**rogerwaters****Member**- Registered: 2013-11-02
- Posts: 85

oh! I know why it didn't lead to the same result in number 2! Because they ask for the length not area!!

You might wanna check that!

-Roger Waters

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 92,897

Was the answer wrong?

**In mathematics, you don't understand things. You just get used to them.**

**Online**

**rogerwaters****Member**- Registered: 2013-11-02
- Posts: 85

I did not submit it. I need to find all of the answers first.

-Roger Waters

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 92,897

I used this formula:

where n is the number of sides which is 6.

**In mathematics, you don't understand things. You just get used to them.**

**Online**

**rogerwaters****Member**- Registered: 2013-11-02
- Posts: 85

That's for number 3 right?

-Roger Waters

Offline

**rogerwaters****Member**- Registered: 2013-11-02
- Posts: 85

But the given only tells me that the radius is 6, how did you get the side?

I'm really confused

-Roger Waters

Offline

**rogerwaters****Member**- Registered: 2013-11-02
- Posts: 85

Oh oh!!! If the radius is 6, then the side is equal 6 right?

So that is my answer: If the radius is equal to 6, then the side is equal to 6 as well.

I also got number 4:

4. If a hexagon has a radius (center to point of angle) of 6, what is the area of the hexagon?

First we find the area of one triangle:

area(t) = r^2 sqrt3 /4

area(t) = 6^2 sqrt3 /4

area(t) = 36 x sqrt3 /4

area(t) = 36 x .433021

area(t) = 15.588756

area(h) = 6 x 15.588756

area(h) = 93.53

-Roger Waters

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 92,897

I plugged into the formula

You are correct for 4.

**In mathematics, you don't understand things. You just get used to them.**

**Online**

**rogerwaters****Member**- Registered: 2013-11-02
- Posts: 85

Alright! Could you check 4 for me?

And here are my answers for number 5 and 6?

5. If a hexagon is resting on a flat side, and has a total height of 18, what is the length of each side of the hexagon?

A = 9^2 x 6 * tan x (180/6)

A = 280.59

Now that I have the area, I have to find the side where s = side of the hexagon.

3 (√3 /2) x S^2 = 280.59

s^2 = 280.59 x 2 / 3 x √3

s^2 = 561.18 / 5.196152

s^2 = 107.99

s = 10.39

6. If a hexagon is resting on a flat side, and has a total height of 18, what is the area of the hexagon?

a = 9^2 x 6 * tan x (180/6)

a = 280.59

-Roger Waters

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 92,897

4)Correct.

There is an easier way to do 5.

**In mathematics, you don't understand things. You just get used to them.**

**Online**

**rogerwaters****Member**- Registered: 2013-11-02
- Posts: 85

What is the easier way?

-Roger Waters

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 92,897

A formula can be created by using the others, it is:

**In mathematics, you don't understand things. You just get used to them.**

**Online**

**rogerwaters****Member**- Registered: 2013-11-02
- Posts: 85

Okay but is the formula I used still correct? Because that's the way the teacher gave it to me.

And what about 6?

-Roger Waters

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 92,897

I would say yes.

What is #6?

**In mathematics, you don't understand things. You just get used to them.**

**Online**

**rogerwaters****Member**- Registered: 2013-11-02
- Posts: 85

6. If a hexagon is resting on a flat side, and has a total height of 18, what is the area of the hexagon?

a = 9^2 x 6 * tan x (180/6)

a = 280.59

-Roger Waters

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 92,897

That is correct, you could also use,

**In mathematics, you don't understand things. You just get used to them.**

**Online**

**rogerwaters****Member**- Registered: 2013-11-02
- Posts: 85

Alright now here's the really tough one, it's worth 4 points.

7. Problem solver (worth 4 points): Come up with a way to find the area and volume of a football. Include in your answer a way to acquire any necessary measurements without cutting or otherwise destroying the football. Also include all necessary formulas to implement your idea. (You don't need to find actual numbers, just outline the method in step by step detail--think of all the measurements you'll need to acquire and how you'll get them.)

-Roger Waters

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 92,897

You will have to fill in the details.

**In mathematics, you don't understand things. You just get used to them.**

**Online**

**rogerwaters****Member**- Registered: 2013-11-02
- Posts: 85

Alright, but what are 'a' and 'b' equal to?

-Roger Waters

Offline