Area Problems
In a circle of radius 21 cm an arc subtends an angle of 72° at the centre. The length of the arc is?

26.4 cm
21.6 cm
13.2 cm
19.8 cm

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Area Problems
The base of a triangular field is three times its altitude. If the cost of cultivating the field at Rs. 24.68 per hectare be Rs. 333.18, find its base and height.

B=900;H=300
B=500;H=900
B=600;H=700
B=300;H=900

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