geometry question data sufficency
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For Area of shaded region, we need to subtract the area of sector from the area of circle..
For area of sector, we need the angle subtended AND the radius.
2 tells us angle is 60
1 gives us the radius.
C
For area of sector, we need the angle subtended AND the radius.
2 tells us angle is 60
1 gives us the radius.
C
- rijul007
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Area of the shaded region?
= (Angle MON)/360 * (pi)* r^2
So you need Angle O and value of r?
Statement 1
circumference = 2*pi*r
2*pi*r = 30
you can find the value of r
but you dont know value of Angle O
Insufficient
Statement 2
MN = NO = OM
Angle O = 60 degrees
but we have no idea about value of r
Insufficient
But combining the two..
we know value of r and angle MON
and thus we can find the Area of the shaded region.
OptionC
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Area of shaded region = Area of circle - Area of Sector
1)Gives area of circle but nothing about sector.Not sufficient.
2)Each angle of triangle =60.
Thus area of sector = 60/360 * Area of circle.
Not sufficient.
Combining you can solve the question.Do not calculate the actual answer.OA is C
1)Gives area of circle but nothing about sector.Not sufficient.
2)Each angle of triangle =60.
Thus area of sector = 60/360 * Area of circle.
Not sufficient.
Combining you can solve the question.Do not calculate the actual answer.OA is C
- sam2304
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IMO C
angle MON/360 * pi * r ^2 = ?
1.Gives r, no info on angle MON.
2.Give angle MON, no info on radius
Combining both we can get the answer.
angle MON/360 * pi * r ^2 = ?
1.Gives r, no info on angle MON.
2.Give angle MON, no info on radius
Combining both we can get the answer.
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