Area Problems
A man runs round a circular field of radius 50m at the speed of 12 km/hr. What is the time taken by the man to take twenty rounds of the field?

90/7 min
220/7 min
110/7 min
230/7 min

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Area Problems
The area of circle inscribed in an equilateral triangle is 154 sq cm. What is the perimeter of the triangle?

42?3 cm
21?3 cm
21 cm
42 cm

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