Area Problems
A park is in the form of a square one of whose sides is 100 m . The area of the park excluding the circular lawn in the centre of the park is 8614 m 2. The radius of the circular lawn is?

41 m
31 m
21 m
None of these

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Area Problems
A polygon has 44 diagonals the number of its sides is?

10
11
12
9

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Area Problems
The radius of a circle is increased so that its circumference increase by 5%. The area of the circle will increase by?

10 %
10.25 %
8.75 %
10.5 %

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Area Problems
The area of rectangle is 1.8 times the area of a square. The length of the rectangle is 5 times the breadth. The side of the square is 20 cm. What is the perimeter of the rectangle?

145 cm
135 cm
144 cm
133 cm

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Area Problems
A person observed that he required 30 s time to cross a circular ground along its diameter than to cover it once along the boundary. If his speed was 30m/min, than the radius of the circular ground is (take ? = 22/7)

3.5 m
10.5 m
7.5 m
5.5 m

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