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Mathematics
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5. PIE12 6. PIE36 Is that right?
|dw:1338516252471:dw|
3. 3sqrt3

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|dw:1338516418696:dw|
Radius of circle = 6 since the triangles are equilateral. So circumference = 2(6)pi=12pi
Area of circle = 36 pi
Do you mean how many degrees in each interior angle?
nvm
Can you check my other answers? I'm dont with all of them here, I need to scan it again
done*
I got 8.3 for the apothem of the pentagon. Your setup seems to be right. Also you need to pay more attention to the form of the answers in both questions.
\[\tan 36=\frac{6}{b}\] \[b \tan 36=6\] \[b=\frac{6}{\tan 36}=8.3\]
Therefore the area of the pentagon = 5(1/2)(12)(8.3)=247.7
Slant height = \[\sqrt{(8.3)^2+(10)^2}=13.0\]
Surface = 5(1/2)(13.0)(12)+247.7=637.7
\[V=\frac{1}{3}(247.7)(10)=825.7\]
are you sure O.o I got complete diferent answers... Smh at me
The reason is that we did not agree on the apothem. Did you see what I said about the apothem?
ohh yeah so everything would be wrong after that lol..
Well check your work. I could have made a mistake. We agree on the setup.
are you sure about the surface area? you ADD the area of the pentagon?
The pyramid is composed of the base which is a pentagon and 5 sides which are 5 congruent triangles. If it said lateral surface area it would be just the 5 triangles but it says surface area so we have to assume it means all of the surfaces.
oh yeah
How long will you be on? Im working on the other side will you be able to help me with that?
Probably about another 20-25 minutes.
alright
@Mertsj http://i.imgur.com/bpW5d.jpg
im doing it as we speak I just dont want you to go
lol you like my -10?
1/2 the difference of the arcs.
30
18. outside times whole = outside times whole.
8(x+8)=7(16) 8x+64=112 x=6
Are you sure about 17. being 30? I think it's only half for like the 120 down to 60. 60 down to B is diferent I think
The measure of an angle formed by a two secants drawn from a point outside the circle is half the the difference of the intercepted arcs. (far arc - near arc)
19. Half the sum of the arcs.
20. 6y=8(9)
21. \[(x-3)^2+(y+9)^2=25\]
22. \[(x+4)^2+(y-11)^2=100\]
23. 13.6
Mert
Do you have paypal? lol
Id like to make a educational donation
LOL
24. 8.0
25. 44 but you had better check these answers because I did not. I just whipped them off. Could easily have hit a wrong button. Good night
ah! night man thanks

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