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?

13.2 cm
21.6 cm
26.4 cm
19.8 cm

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Area Problems
The lengths of three line segments (in cm) are given in each of the four cases. Which one of the following cases is not suitable to be the three sides of a triangle?

2, 3, 5
2, 4, 5
3, 4, 5
2, 3, 4

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