Interested to Buy Any Domain ? << Click Here >> for more details...
ARITHMETIC PAPER QUESTION :-
LENTHS OF THE PERPENDICULAR FROM A POINT IN THE INTERIOR OF
AN EQUILATERAL TRIANGLE ON ITS SIDES ARE 3cm,4cm and
5cm.AREA OF THE TRIANGLE IS (A) 48√3 ; (B) 54√3 ; (C)
72√3 ; (D) 80√3.
PLEASE SOLVE SUBJECTIVELY AND SHOW PROCESS ALSO.
- 1 Answers
- 7452 Views
- I also Faced
- E-Mail Answers
The answer is (A) 48√3.
Let ABC be the Equilateral triangle & O be a point in the
interior of the triangle.
OD,OE & OF BE the respective altitudes drawn on side BC,CA
& AB.
jOIN OA,OB&OC.
Then we have three triangles inside the triangle ABC;Namely
triangle OAB,triangle OBC & triangle OAC.
Now,Area of Equilateral triangle ABC = Sum of the area of
the three triangles OAB,OBC & OAC.
AREA of triangle OBC = 1/2(BC*OE)= 1/2(x*4)
AREA of triangle OAC = 1/2(AC*OF)= 1/2(x*5)
AREA of triangle OAB = 1/2(AB*OD)= 1/2(x*3)
Where,AB = BC = CA = x
BUT,
√3/4(x2)=1/2(x*4)+1/2(x*5)+1/2(x*3)
SOLVE for x.
AND find the AREA by using the formula:
AREA of an Equilateral Triangle = √3/4 (side)2 = √3/4(x2).
| Is This Answer Correct ? | 6 Yes | 3 No |
pls send me atleast last 3 years papers og combined grad level exams both prelims and mains......... which book to refer ????
is ssc cgl-2010 's last cut off for interveue for st will be aprox 50% pls give me ulternative answer pls pls pls
WHAT WILL BE THE MAXIMUM SALARY OF A POSTAL ASSISTANT THE PAY BAND IS 1:- (5200-20200) WITH A BASIC PAY OF RS. 7510 + GRADE PAY RS. 2400 + ADMISSIBLE ALLOWANCES AND WHAT IS THE PAY STRUCTURE IN WHICH MY SALARY WILL INCREASE.
1 Answers Postal Assistant Exam, SSC,
Plz give me information about....computer test for the post of Assistant(CSS) ..
SAS Apprentice in CGDA 2010 Written Qualified Report Here !!!
Which day is the International Human Rights day
has anybody got selected in tax assistant exam 2009???? i have cheked almost 15-20 roll no.s along with mine none has been selected how can this be possible?
HI FRIENDS I WANT TO KNOW HOW MANY MARKS DO YOU EXPECT IN TIER II MATHS & ENGLISH & ALSO IN TIER 1. PREM , GAUTAM ,ANKIT ,HITESH PLEASE POST YOUR SCORES .
I am selected as multi tasking staff by SSC and posted to Income Tax dept.I saw the result on October 2011. when will I get Office order. What are departmental exams can I write. and when I can write the exams. After conformation of during probation period.What are the exams available to me.
wat would be d best of cadre wich i can get out of 273 (tierI + tierII, excluding interview) marks in SC category in SSC CGL,2011..
what type of questions are asked in ssc cgl interviews
What is the transfer system/policy for the auditor/senior auditor who got appointment as auditor in CGDA through SGLE 2011
SSC History 
