anonymous
  • anonymous
geometry question please help !!!!!!! this is my last one
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
|dw:1360020584560:dw|
karatechopper
  • karatechopper
Ok, so if AD is the same as CD..what should AD be?
anonymous
  • anonymous
4 ft?

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karatechopper
  • karatechopper
Correct! Now do you know what the formula for finding the are of a triangle is?
anonymous
  • anonymous
b * h?
karatechopper
  • karatechopper
Close! (B x H)1/2
anonymous
  • anonymous
oh yea i forgot the half
karatechopper
  • karatechopper
:) Its ok Ok, so what do you think the base is?
anonymous
  • anonymous
4 *4 ? or add ?
karatechopper
  • karatechopper
U are gonna add it..soo whats it gonna be?
anonymous
  • anonymous
8
karatechopper
  • karatechopper
Good!
karatechopper
  • karatechopper
Now whats the height?
anonymous
  • anonymous
7
anonymous
  • anonymous
8*7?
karatechopper
  • karatechopper
Good..now put that in the formula
karatechopper
  • karatechopper
Yes!
karatechopper
  • karatechopper
But don't forget the 1/2 in the formula
anonymous
  • anonymous
its 28 right ?
karatechopper
  • karatechopper
Yep!!! \[28 ft ^{2}\]
anonymous
  • anonymous
thank you :)
anonymous
  • anonymous
it said it was wrong ? :(
karatechopper
  • karatechopper
You're welcome! :)
karatechopper
  • karatechopper
What?!?
anonymous
  • anonymous
yeah i dont know what went wrong
karatechopper
  • karatechopper
Oh..I see..
karatechopper
  • karatechopper
I know..
karatechopper
  • karatechopper
I hope this wasn't a quiz for a big grade right!?
karatechopper
  • karatechopper
Cuz, I see what went wrong..and I am really sorry!!
anonymous
  • 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
  • anonymous
whats that?
karatechopper
  • karatechopper
Sure!
karatechopper
  • karatechopper
Lol nvm ahha
karatechopper
  • karatechopper
Just post your next question
anonymous
  • anonymous
|dw:1360021622659:dw|
anonymous
  • anonymous
Is it the same way you told me>?
karatechopper
  • karatechopper
Yup!
anonymous
  • anonymous
|dw:1360021756423:dw|
anonymous
  • anonymous
what is the area of this parallelogram
karatechopper
  • karatechopper
I think its just B x H
anonymous
  • anonymous
so 6 + 4 ? 10 and times 20 ?
karatechopper
  • karatechopper
Oh wait..no..
karatechopper
  • karatechopper
Ok..you see how there this a small triangle in the parallelogram?
anonymous
  • anonymous
yes
karatechopper
  • 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
  • karatechopper
So..whats the base of the triangle?
anonymous
  • anonymous
its 4 ft
karatechopper
  • karatechopper
Good. Now do you have any idea of how to find the height of the triangle?
anonymous
  • anonymous
no i dont, how do you find it ?
karatechopper
  • 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
  • anonymous
how do you solve ?
anonymous
  • anonymous
is it 10 ?
anonymous
  • anonymous
wait its 125 !
karatechopper
  • karatechopper
The H is 10
anonymous
  • anonymous
oh i was right the first time then
karatechopper
  • karatechopper
Yeh! Now that you know what the height is, you can now find the area of the parallelogram
karatechopper
  • karatechopper
Its going to be the basic formula B x H
anonymous
  • anonymous
so 4* 10 ?
karatechopper
  • karatechopper
no..try again..
anonymous
  • anonymous
10 times 10 ?
karatechopper
  • karatechopper
yes
anonymous
  • anonymous
the answer is 100 !?
anonymous
  • anonymous
|dw:1360023228622:dw|
Directrix
  • 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
  • anonymous
the area would be 810 ?
anonymous
  • anonymous
oh nvm its 9
Directrix
  • Directrix
That is correct (9).
anonymous
  • anonymous
no its wrong :(
Directrix
  • 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
  • anonymous
|dw:1360024796872:dw|
anonymous
  • anonymous
whats the area of this trapazoid ?
Directrix
  • 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
  • Directrix
Area of trapezoid is (1/2) * 6 * 14 + 13 * 14 A = ?
anonymous
  • anonymous
is it 133?
Directrix
  • 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
  • anonymous
224 ?
anonymous
  • anonymous
or 48?
Directrix
  • Directrix
224 ? --> I agree.
anonymous
  • anonymous
so the area of the trapazoid is 224 ?
Directrix
  • Directrix
That is what I got.
anonymous
  • anonymous
are you sure?
Directrix
  • Directrix
What are the options?
anonymous
  • 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
  • Directrix
If the picture is correctly drawn and labeled, I am certain that the answer is 224 square feet.
Directrix
  • Directrix
@andrea408
anonymous
  • anonymous
|dw:1360025794352:dw|
anonymous
  • anonymous
@needmathhelp7 can you help me please?
anonymous
  • 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
  • anonymous
ok thanks
anonymous
  • anonymous
@jim_thompson5910 can you help me please?
jim_thompson5910
  • 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
  • jim_thompson5910
In general Area of Parallelogram: A = B*H B = base H = height
anonymous
  • anonymous
so the area of ABDF is just 13.5 ?
jim_thompson5910
  • jim_thompson5910
yep 13.5 square miles
anonymous
  • anonymous
are you sure?
jim_thompson5910
  • jim_thompson5910
yes
anonymous
  • anonymous
thank you !
jim_thompson5910
  • jim_thompson5910
np

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