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Mathematics 8 Online
Nicole:

http://prntscr.com/i64dlq

Nicole:

@dude

Nicole:

I think the answer is 48...Am I correct?

dude:

Right, base times height

Nicole:

http://prntscr.com/i64e32

Nicole:

36?

dude:

Right :P

Nicole:

http://prntscr.com/i64f7z

Nicole:

1344? Multiplied all the numbers

dude:

\[A=\frac{a+b} 2\cdot h\]

dude:

|dw:1517005112105:dw|

Nicole:

The height in 12...14+8 is 22....22 divided by 2 is 11 and 11 times 12 is 132 132?

Nicole:

Damn a lot of work LOL

Nicole:

Am I correct?

dude:

\[A=\frac{8+14}2\cdot 12\\ =\frac{22}{2}\cdot 12\\ =11\cdot 12\\ =132\] yes

Nicole:

http://prntscr.com/i64h22

dude:

\(Parallelogram~Area= b\cdot h\) Substitute values we know \(244=16\cdot h\) Solve for h

dude:

Hint: Divide both sides by 16

Nicole:

244 divided by 16 is 15.25 16 divided by 16 is 1

Nicole:

16 times 15 is 240

Nicole:

Oh it is 14...Am I correct?

dude:

Wait, why are you multiplying?

dude:

Yes it is 14

Nicole:

14 is the answer

Nicole:

http://prntscr.com/i64hst

Nicole:

This is 15...Correct?

Nicole:

19 timed 15 is 285

dude:

Right

Nicole:

http://prntscr.com/i64kf8

dude:

\[C=2\cdot π\cdot r\]

Nicole:

Can u plug in the numbers for me?

dude:

r being radius, in order to find the radius we must divide the diameter by 2

Nicole:

What is the diameter?

Nicole:

What number?

dude:

|dw:1517005787297:dw|

Nicole:

|dw:1517005800509:dw|

dude:

That is the diameter

Nicole:

OK so 60 divided by 2 is 30

Nicole:

So the radius is 30

dude:

Right, so we substitute into \(C=2\cdot π\cdot r\) \[C=2\cdot π\cdot 30\]

Nicole:

Is it 60π

Nicole:

Final answer

dude:

Right

Nicole:

http://prntscr.com/i64n33

Nicole:

So that would be 40?

dude:

Circumference can also be re-written as \(C=\pi \cdot d\)

Nicole:

So am i right?

dude:

No

Nicole:

20 sorry

dude:

Right

dude:

\(20\pi\)

Nicole:

http://prntscr.com/i64o1j

dude:

\(C=2\cdot \pi \cdot r\\ C=2\cdot 3.14 \cdot 8.5\)

Nicole:

Ok gimme a sec to do the math :p

dude:

Sure :P

Nicole:

53.38

Nicole:

So it would be 53.4?

dude:

Right

Nicole:

http://prntscr.com/i64pkg

dude:

\(C=2\cdot \pi \cdot r\\ C=2\cdot 3.14 \cdot 7.8\)

Nicole:

http://prntscr.com/i64q3p

Nicole:

So it is 48.9

dude:

\(C=2\cdot \pi \cdot r\\ C=2\cdot 3.14 \cdot 18\)

Nicole:

U changed it

Nicole:

Nvm sorry....gimme a sec

dude:

The one I just put is for the most recent question you posted

Nicole:

113

dude:

Both are right

dude:

Round the first one, though

Nicole:

Yea I got it.... Thanks for the help....I got a 100 on both.... Thanks again! :p

dude:

Ah okay, you're welcome :P

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