# Geometry for CAT 2011Quantitative Report

Hi Guys,
Geometry, Algebra and Number system form the major chunk of our QA section for CAT.
Proficiency in these three sections would definitely boost our Quants scores.
Contents of Geometry
1. Plane Geometry - Basics and Triangles
3. Circle
4....
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Can I ask a doubt here how you reach that ADE is a straight Line??
wats the ans?????
In an acute angle triangle all the angles are positive integers and 13 times one angle is equal to 17 times another angle then what could be the minimum angle??
Please solve it ..i dint get it after trying for 3 hrs
ans can also be 30 ,65,85..
30+65+85=180...all are positive integers.......
How 2 wrongs make up for one right answer...
If ADF is x then BDF = 2x. => DBE = 2x=> EDC = 4x. Total unshaded = 9x.
Then BEA = 6x and ABC = 18x. Since 18x = 1, 9x = 1/2!
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yes u r right ... i too get 1/2
Hi tukku,
Let area of ADF be x then BDF will be 3x. { traingles on same line segment and common vertex have their areas in ratio of their bases }
As BDF is 3x, DBE will also be 3x. And thus EDC will be 9x.
Now draw a line EA. DFA is x so EDA is x.
The...
3 3
Hi,
The approach is simple.. avoid all confusions of what height has come down, etc.. just stick to the difference of volume ' V ' which is proportional to surface area at a given time.
2/3V-1/2V = K*pi*R2
1/2V- xV = K*pi*r2
Here R is initial surface radius, which can be found by co...
hi can sm1 pls solve this question for me.. i m unable to solve it.. at least give an approach.. i will at least try.. thanks...
ABC is a triangle with area 1. AF = AB/3, BE = BC/3 and ED = FD. Find the area of the shaded figure.
a. 1/2 b. 5/9 c. 1/3 d. 13/16
I think the answer should be 1/2
tell me the OA
Chk solution in attached pic in my post.
for detail solution plz see attached image
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How do i form the equation. can you please explain ?
ABC is a triangle with area 1. AF = AB/3, BE = BC/3 and ED = FD. Find the area of the shaded figure.