Two DS Question
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- cubicle_bound_misfit
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Hello Sir,
For the geometry q is the answer D?
Please let me know OA.
regards,
For the geometry q is the answer D?
Please let me know OA.
regards,
Cubicle Bound Misfit
- cubicle_bound_misfit
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you owe me one https://www.beatthegmat.com/set-q-1-t14264.html#58978
for the semicircle lenght of sector pi*R
you have to substract the rest of the sector with inscribed angle 45 degree.
regards,
for the semicircle lenght of sector pi*R
you have to substract the rest of the sector with inscribed angle 45 degree.
regards,
Cubicle Bound Misfit
Ohh u remember that question , well had sent u a PM explaining my stance.
Nehw comin back to this question, how can u say that OAX is a quarter circle (or for that matter how can u say that the inscribed angle is 45 degree) I see no basis for this being provided by the question or the options.
Nehw comin back to this question, how can u say that OAX is a quarter circle (or for that matter how can u say that the inscribed angle is 45 degree) I see no basis for this being provided by the question or the options.
- cubicle_bound_misfit
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I am not saying oax is. I am saying the rest of the thing is.
So OAX = (length of semicircle - sector that has an inscribed angle of 45 degs.)
regards,
So OAX = (length of semicircle - sector that has an inscribed angle of 45 degs.)
regards,
Cubicle Bound Misfit
I think the ans on Q1 is E
Stem: We need to find number presents to wrap and range of presents that can be wrapped in 1 hr based on number of clerks available to wrap presents, to determine sufficiency.
1) tells us # range of presents that can be wrapped in 1 hr but not # of presents - INSUFFICIENT
ex: 6 clerks can wrap 120-180 presents in 1 hour
2) tells us # range of presents but not # of clerks available - INSUFFICIENT
ex: 70(p+1)=9(20), 70p=110=total presents to wrap based on rate of 20 per hour, or it may be 70(p+1)=9(30), 70p=200=total presents to wrap based on rate of 30 per hour
1+2) INSUFFICIENT because we know the clerks can wrap up to 180 per hour but we don't know if the shoppers have 110 or 200 presents to wrap
Stem: We need to find number presents to wrap and range of presents that can be wrapped in 1 hr based on number of clerks available to wrap presents, to determine sufficiency.
1) tells us # range of presents that can be wrapped in 1 hr but not # of presents - INSUFFICIENT
ex: 6 clerks can wrap 120-180 presents in 1 hour
2) tells us # range of presents but not # of clerks available - INSUFFICIENT
ex: 70(p+1)=9(20), 70p=110=total presents to wrap based on rate of 20 per hour, or it may be 70(p+1)=9(30), 70p=200=total presents to wrap based on rate of 30 per hour
1+2) INSUFFICIENT because we know the clerks can wrap up to 180 per hour but we don't know if the shoppers have 110 or 200 presents to wrap
Well I'm really sorry but somehow I cannot see which 45 degree incribed angle are you referring to and how did you get measure of that angle. are you assuming that OX is perpendicular to AB, if yes then what basis?cubicle_bound_misfit wrote:I am not saying oax is. I am saying the rest of the thing is.
So OAX = (length of semicircle - sector that has an inscribed angle of 45 degs.)
regards,
- airan
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Assuming AC cuts the semicircle at X, we wud need angle AOX to find the area of the minor sector AX.
A similar diagonal DB will also cut the circle at X( it being a square on diameter).
Now the area of semicircle is= are of triangle AXB plus 2 small sectors.
Area of triangle AXB can be found ..as it will be right triangle ..Hence area of the shaded region can be found .
B gives the same info as A hence D.
A similar diagonal DB will also cut the circle at X( it being a square on diameter).
Now the area of semicircle is= are of triangle AXB plus 2 small sectors.
Area of triangle AXB can be found ..as it will be right triangle ..Hence area of the shaded region can be found .
B gives the same info as A hence D.
Thanks
Airan
Airan