Area Problems
The radius of the wheel of a vehicle is 70 cm. The wheel makes 10 revolutions in 5 seconds. The speed of the vehicle is?

32.72 km/hr.
31.68 km/hr.
36.25 km/hr.
29.46 km/hr.

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Area Problems
The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:

42%
44%
46%
40%

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