Latest Accenture Aptitude Question SOLUTION: The sum of the areas of two circles which touch each other externally is 153?. If the sum of their radii is 15, find the ratio of the larger to the smaller radius.

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The sum of the areas of two circles which touch each other externally is 153?. If the sum of their radii is 15, find the
ratio of the larger to the smaller radius.

Asked In Accenture a2ll (12 years ago)

Unsolved Read Solution (3)

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Read Solution (3) :

harigopal  (12 years ago)

radii let r1,r2 r1+r2=15
r1^2+r2^2=153
r1^2+(15-r162)=153
r1=12,r2=3
12:3
4:1
small radii is =4

Is this solution Helpfull? Yes (12) | No (44)  

shakeel ahmed  (8 years ago)

The question is too having one π missing add of both cirles area is 153π

Hope by this u ll b able to crack it

Given r1+ r2 = 15

And πr1² + πr2² = 153π
r1² + r2² = 153

Put value of r2 as 15 - r1

Hence solve eqns

r1 and r2 be 12 and 3

Is this solution Helpfull? Yes (1) | No (1)  

Kshitij  (4 years ago)

I think there is a little correction in the question ,What I have found out the area of Two circles are 153π, if that is the case then here goes my solution to this question:-
Let the radius of the
2 circles be r1 and r2 , then
r1 + r2 = 15 (given)
and
πr21+πr22=153π (given)
r21+r22=153
∴r21+(15−r1)2=153
On solving, we get
r1=12,r2=3
Required ratio
=12:3=4:1

Is this solution Helpfull? Yes (1) | No   

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