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?

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

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Area Problems
A man riding a bicycle, completes one lap of a circular field along its circumference at the speed of 14.4 km/h in 1 min 28 s. What is the area of the field?

8842 sq m
7958 sq m
9856 sq m
Cannot be determined

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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:

46%
42%
40%
44%

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