Question

find the perimeter and area of the sector of a circle of radius 9cm with central angle 35degree​

Answer 1

perimeter of sector=2r+2πrthita/360

perimeter of sector=2×9+2×22/7×9×35/360

perimeter of sector=18+44/7×63/72

perimeter of sector=18+44/8

perimeter of sector=18+5.5

perimeter of sector=23.5