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Mathematics 50 Online
OpenStudy (jaybear97):

find the area

OpenStudy (jaybear97):

OpenStudy (anonymous):

area= base times height

OpenStudy (anonymous):

420=35 times the base lenght

OpenStudy (anonymous):

to isolate and find the answer do 420 divided by 35

OpenStudy (anonymous):

your answer is 12 cm

OpenStudy (jaybear97):

Thanks!

OpenStudy (jaybear97):

Can I have help with a few more?

OpenStudy (anonymous):

If you need help, I'm here too @jaybear97

OpenStudy (jaybear97):

thank you! @victoriaEl12

OpenStudy (jaybear97):

OpenStudy (jaybear97):

@VictoriaEL12

OpenStudy (anonymous):

Sorry, got caught up doing other things, I can help too.

OpenStudy (anonymous):

So you add b1 +b2 together and divided it but 2. Whatever # that is multiple it by the height of the trapezoid.

OpenStudy (anonymous):

*divide

OpenStudy (anonymous):

no multiple by the height

OpenStudy (jaybear97):

not sure what to do?

OpenStudy (anonymous):

exactly what you said

OpenStudy (anonymous):

http://www.mathopenref.com/trapezoidarea.html @jaybear97

OpenStudy (anonymous):

when i do it i get 49

OpenStudy (jaybear97):

Alright ya thats what I got to!

OpenStudy (jaybear97):

I have to show all my work on this one

OpenStudy (anonymous):

Good, just trust yourself, you could've got that one

OpenStudy (anonymous):

do you know the pythagorean theorem

OpenStudy (jaybear97):

Not really...

OpenStudy (anonymous):

ok how about sine

OpenStudy (anonymous):

pythagorean theorem is a^2+b^2=c^2 c is the hypotenuse

OpenStudy (jaybear97):

Thats what I thought it was but i was not sure!

OpenStudy (anonymous):

4^2+b^2=8^2 because you need to find the height

OpenStudy (anonymous):

64-16= b^2

OpenStudy (jaybear97):

48

OpenStudy (anonymous):

yes now find the most radical form of the square root of 48

OpenStudy (jaybear97):

Isn't it 4 square root of 3

OpenStudy (anonymous):

yes, now you first need to find the area of one of the shapes you see 2 by the dotted lines. let's start with the triangle. 4 times 4 square root of 3 divided by 2 = area of your triangle

OpenStudy (jaybear97):

19.59?

OpenStudy (anonymous):

yes. now lets find the area of the rectangle. 6 times 4 square root of 3= area of rectangle

OpenStudy (anonymous):

then add that to the area of your triangle, and you have got your answer

OpenStudy (jaybear97):

41.569

OpenStudy (anonymous):

yes but since it says, if it is not an integer leave it in the most radical form, your answer would be?

OpenStudy (anonymous):

it might help to go all the way back to the area of your triangle and see your radical form of that area, and add it to the radical form of the other area

OpenStudy (jaybear97):

41.7/

OpenStudy (jaybear97):

i meant 41.6?

OpenStudy (anonymous):

yep

OpenStudy (anonymous):

that is what i got

OpenStudy (jaybear97):

I have to show my work so im not sure what to put

OpenStudy (anonymous):

just show what you did to find the area of the triangle, then the rectangle, then when you added them up together just show the equations we used to find your answer

OpenStudy (anonymous):

in the order we used them

OpenStudy (anonymous):

any more questions

OpenStudy (anonymous):

feel to ask me anything just tag me or message me

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