Class 9 exercise 6.2 NBF Maths Ex 6.2 national book foundation maths | Length of Arc Area of Sector #AreaofSector #LengthOfArc Time Codes chapters 00:00 Searching Method 00:38 Q no 1 Find Length of Arc Area of Sector 14:26 Q no 2 Find Length of Arc Area of Sector 17:19 Q no 3 Find Central Angle of a Sector 26:32 Q no 4 Find Radius of a Circle 34:22 Q no 5 Find Length of Arc 36:36 Q no 6 Fine Central Angle of Circle 41:20 Q no 7 Find Perimeter & area of a half Circle 46:05 Q no 8 find angle Between Hour hand and minute hand