Area of an irregular figure

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abhasjha: Master | Next Rank: 500 Posts; Posts: 379; Joined: Tue Sep 30, 2008 7:17 amFollowed by: 11 members; Location: NY; Thanked: 28 times

by abhasjha » Wed Sep 24, 2014 11:15 am

can any expert tell me theory behind how to calculate the area of an irregular figure ?

Last edited by abhasjha on Wed Sep 24, 2014 11:47 am, edited 1 time in total.

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Source: Beat The GMAT — Problem Solving | Wed Sep 24, 2014 11:15 am

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Brent@GMATPrepNow: GMAT Instructor; Posts: 16207; Joined: Mon Dec 08, 2008 6:26 pmFollowed by: 1268 members; Location: Vancouver, BC; Thanked: 5254 times; GMAT Score:770

by Brent@GMATPrepNow » Wed Sep 24, 2014 11:25 am

abhasjha wrote:can any expert tell methe theory behind how to calculate the area of an irregular figure ?

You might need to be a little more specific here.
What kind of irregular figure?

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Brent

Brent Hanneson - Creator of GMATPrepNow.com

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abhasjha: Master | Next Rank: 500 Posts; Posts: 379; Joined: Tue Sep 30, 2008 7:17 amFollowed by: 11 members; Location: NY; Thanked: 28 times

by abhasjha » Wed Sep 24, 2014 11:43 am

Dear Brent ,

I have attached the file . Please have a look at it . more information given in the question is - assume 1 square grid equal to 1 cm .

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Brent@GMATPrepNow: GMAT Instructor; Posts: 16207; Joined: Mon Dec 08, 2008 6:26 pmFollowed by: 1268 members; Location: Vancouver, BC; Thanked: 5254 times; GMAT Score:770

by Brent@GMATPrepNow » Wed Sep 24, 2014 12:03 pm

abhasjha wrote:

Dear Brent ,

I have attached the file . Please have a look at it . more information given in the question is - assume 1 square grid equal to 1 cm .

Yikes - what resource is this from?
If there were answer choices (where are the answer choice anyway?), perhaps they'd be spread out enough for us to ESTIMATE. As it stands, this question can't be answered with any accuracy.

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Brent

Brent Hanneson - Creator of GMATPrepNow.com

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[email protected]: Elite Legendary Member; Posts: 10392; Joined: Sun Jun 23, 2013 6:38 pmFollowed by: 511 members; Location: Palo Alto, CA; Thanked: 2867 times; GMAT Score:800

by [email protected] » Wed Sep 24, 2014 8:03 pm

Hi abhasjha,

I agree with Brent - the idea that this is part of a GMAT prompt would strike me as questionable.

Is it part of a larger picture? A graph perhaps? When you say that we're to "assume that 1 square grid = 1cm^2", does that mean that AC, CD, DE, etc. are all 1cm long? Where/what are the answer choices?

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Rich

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