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retarded independent 04 2u question 4c (1 Viewer)

Li0n

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ok i rekon this question is absolutely retarded
http://www.members.optusnet.com.au/li0n/indep 04 2u.JPG

i get pie/2
since

pie = 1/2 x 2<sup>2</sup> x @

Answers say
" ABCD area = [1/2 x 4<sup>2</sup>@] - [1/2 x 2<sup>2</sup>@]
pie = 6@
@ = pie/6
"
From that working out it looks like the guy used that the area of the undshaded area = pie, so yeah wrong....

i think im right

correct me if im wrong :)
 

withoutaface

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2<sup>2</sup>pi*AOB/2pi=pi
2*AOB=pi
AOB=pi/2

You are correct.
 

Li0n

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arrigatou gozaimasu!

ok now time to bash the retard who wrote the answers
 

flower_farie

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lol...they shaded in the wrong part, it was supposed to be the other part
 

Li0n

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ohhhhhh
meh thanks for that then
i thought it was that otherwise the question it self is stupid
 

withoutaface

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I fixed the title because the spelling was annoying me:p
 

Xayma

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Since when do we express units in terms of pie?

It is pi or &pi; or &pi;. Not PIE!!! *insert chainsaw smiley*
 

dingding

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Also, the radius is 2 metres, but the shaded area is pi centimetres^2.

pi = 1/2 x 200^2 x @
 

Xayma

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Yep, this must be the worst written question ever.

True answer:

A=1/2r<sup>2</sup>&theta;<sup>c</sup>
&theta;<sup>c</sup>=2A/r<sup>2</sup>
=2&pi;/40000
=&pi;/20000

Hence &theta;=0.009&deg;
 
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withoutaface

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pi/2=90', but the area was in cm and the thing was shaded wrong.

I declare this to be the most fucked up question in the history of mathematics.
 

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