MBA Exam

The foot of a ladder is 15m long, is 9m from a house and its top reaches the upper part of a circular window. When the foot is drawn to a distance of 3m away from the house, the top reaches the lower edge of the window. Find the area of the window.

1) 5(2/3)
2) 6
3) 7(1/14)
4) 8(2/3)

Read Solution (Total 1)

3) 7(1/14)

The foot of a ladder is 15m long, is 9m from a house and its top reaches the upper part of a circular window. When the foot is drawn to a distance of 3m away from the house, the top reaches the lower edge of the window.
It means , earlier it reached Root (25^2-9^2)= 12 m height.
now it is reaching up to Root (25^2-12^2)= 9m height.

so dia of circular window = 12-9= 3m
radius = 3/2 mtrs
area of window = Pi*r^2 = (22/7)*(9/4) = 99/14 sq mtrs = 7 1/14 .. option 3
11 years agoHelpfull: Yes(2) No(1)

MBA Other Question

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1) Greater than π / 4 and less than 1
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A bird starts flying from a place O towards B via A. There is no wind resistance from O to A. But there is uniform wind resistance between A and B. To travel from O to B the bird takes 12 minutes, whereas to travel from B to O via A, the bird takes 14 minutes. Had there been wind resistance between O and A also (which equals that between A and B), the bird would have taken only 11 minutes to travel from O to B. O, A and B are collinear.If there was the same wind resistance between O and A as between A and B, what would be the time taken by the bird to travel from B to O?

1) 12.5 min
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