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#1 Re: Help Me ! » Polygon Question » 2015-05-04 02:58:50

ROA

Hi David,

It seems you don't understand the polygon of a thing yet.

Just as we explained to you last time, the sum of interior angles of any polygon is 180n - 360 .

Which simplified to 180(n - 2) .

Now to your question,

126 + { ( n - 1 ) * 162 } = 180(n - 2)  .

Solve above equation to get n which is is the number of sides of the polygon .



ROA

#2 Re: Help Me ! » About Circles » 2015-04-01 22:04:28

ROA

Hi EbenezerSon,

The answer is wrong.

The Perimeter of Major Sector = Length of Major Arc + ( 2 * radius).

Length of Major Arc = [(360 - 60) / 360] * [ 2 * (22/7) * radius ].

Solve it , you will get the answer .

ROA

#3 Re: Help Me ! » Solving Radical Equations - I » 2015-04-01 00:02:46

ROA

Hi Bob,

Q4 refers pls.

Do you see SQRT among the answers might be tempting.

Pls check what follows SQRT in the answer.


ROA

#4 Re: Help Me ! » Need help with a polygon question » 2015-03-01 23:59:44

ROA

180(n-2) = 161+125 +158(n-2)

Therefore n=15

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