Indian Institute of Foreign Trade 2012 Solved Paper

Question : 30 of 128

Marks: +1, -0

In a circular field, there is a rectangular tank of length 130 m and breadth 110 m. If the area of the land portion of the field is 20350 m then the radius of the field is

85 m
95 m
105 m
115 m

Validate

Solution:

The area covered by the rectangular tank

=130×110=14300\;m^2

The total area of the field

=20350+14300=34650\;m^2

We know,

34550\;m^2=π×r^2

Thus,

r^2={34650×7}/22

Thus,

r=105m

Hence, option C is the correct answer.

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