geometry question please help !!!!!!! this is my last one

- anonymous

geometry question please help !!!!!!! this is my last one

- katieb

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- anonymous

|dw:1360020584560:dw|

- karatechopper

Ok, so if AD is the same as CD..what should AD be?

- anonymous

4 ft?

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## More answers

- karatechopper

Correct!
Now do you know what the formula for finding the are of a triangle is?

- anonymous

b * h?

- karatechopper

Close!
(B x H)1/2

- anonymous

oh yea i forgot the half

- karatechopper

:) Its ok
Ok, so what do you think the base is?

- anonymous

4 *4 ? or add ?

- karatechopper

U are gonna add it..soo whats it gonna be?

- anonymous

8

- karatechopper

Good!

- karatechopper

Now whats the height?

- anonymous

7

- anonymous

8*7?

- karatechopper

Good..now put that in the formula

- karatechopper

Yes!

- karatechopper

But don't forget the 1/2 in the formula

- anonymous

its 28 right ?

- karatechopper

Yep!!!
\[28 ft ^{2}\]

- anonymous

thank you :)

- anonymous

it said it was wrong ? :(

- karatechopper

You're welcome! :)

- karatechopper

What?!?

- anonymous

yeah i dont know what went wrong

- karatechopper

Oh..I see..

- karatechopper

I know..

- karatechopper

I hope this wasn't a quiz for a big grade right!?

- karatechopper

Cuz, I see what went wrong..and I am really sorry!!

- anonymous

well i have 5 questions to answer and i have to get a perfect score in order to go on my next lesson. its okay can you help me on my next one ?

- anonymous

whats that?

- karatechopper

Sure!

- karatechopper

Lol nvm ahha

- karatechopper

Just post your next question

- anonymous

|dw:1360021622659:dw|

- anonymous

Is it the same way you told me>?

- karatechopper

Yup!

- anonymous

|dw:1360021756423:dw|

- anonymous

what is the area of this parallelogram

- karatechopper

I think its just B x H

- anonymous

so 6 + 4 ? 10 and times 20 ?

- karatechopper

Oh wait..no..

- karatechopper

Ok..you see how there this a small triangle in the parallelogram?

- anonymous

yes

- karatechopper

Ok. That A stands for Area. And that A is in the triangle. So its saying that the area of the triangle is 20. So we need to find the height of the triangle before trying to find the are of the paralellogram.

- karatechopper

So..whats the base of the triangle?

- anonymous

its 4 ft

- karatechopper

Good. Now do you have any idea of how to find the height of the triangle?

- anonymous

no i dont, how do you find it ?

- karatechopper

Ok..well one way is that you can put the info you have in the area of a triangle formula and solve fore the height..it would look like this..
(4 x H)1/2=20
SOLVE IT!
The 4 is for the Base..the 20 is for the area..

- anonymous

how do you solve ?

- anonymous

is it 10 ?

- anonymous

wait its 125 !

- karatechopper

The H is 10

- anonymous

oh i was right the first time then

- karatechopper

Yeh! Now that you know what the height is, you can now find the area of the parallelogram

- karatechopper

Its going to be the basic formula
B x H

- anonymous

so 4* 10 ?

- karatechopper

no..try again..

- anonymous

10 times 10 ?

- karatechopper

yes

- anonymous

the answer is 100 !?

- anonymous

|dw:1360023228622:dw|

- Directrix

The area of a triangle is (1/2) its base length times its corresponding height.
If the base is 4.5 and the height 4, then the
Area is (1/2)*(4.5)*4
Area = ?

- anonymous

the area would be 810 ?

- anonymous

oh nvm its 9

- Directrix

That is correct (9).

- anonymous

no its wrong :(

- Directrix

Then, please check the diagram.
The base is marked 4.5 and the height 4.
That would be 9 square miles.
Check to see if the diagram is marked correctly. @andrea408

- anonymous

|dw:1360024796872:dw|

- anonymous

whats the area of this trapazoid ?

- Directrix

The area of a rectangle is the product of the length and the width.
The area of a triangle is (1/2)b * h.
So, ...
|dw:1360024949464:dw|

- Directrix

Area of trapezoid is (1/2) * 6 * 14 + 13 * 14
A = ?

- anonymous

is it 133?

- Directrix

Try again -->
(1/2) * 6 * 14 + 13 * 14
---------------
Do one-half of the product of 6 and 14. Add that answer to the product of 13 and 14 and post what you get.

- anonymous

224 ?

- anonymous

or 48?

- Directrix

224 ? --> I agree.

- anonymous

so the area of the trapazoid is 224 ?

- Directrix

That is what I got.

- anonymous

are you sure?

- Directrix

What are the options?

- anonymous

i dont have options . i just put in the answer and click done to see if its correct but im scared to click

- Directrix

If the picture is correctly drawn and labeled, I am certain that the answer is 224 square feet.

- Directrix

@andrea408

- anonymous

|dw:1360025794352:dw|

- anonymous

@needmathhelp7 can you help me please?

- anonymous

I'm so sorry, honey I wish I could, but I'm bad at this myself! Lol Good luck!! :) @andrea408 Try seeing @jim_thompson5910 @phi @JamesJ or @Luis_Rivera maybe they can help!

- anonymous

ok thanks

- anonymous

@jim_thompson5910 can you help me please?

- jim_thompson5910

the base is 4.5, the height is 3
so the area is just base * height = 4.5 * 3 = 13.5 square miles

- jim_thompson5910

In general
Area of Parallelogram: A = B*H
B = base
H = height

- anonymous

so the area of ABDF is just 13.5 ?

- jim_thompson5910

yep 13.5 square miles

- anonymous

are you sure?

- jim_thompson5910

yes

- anonymous

thank you !

- jim_thompson5910

np

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