The perimeter of a sector of a circle of radius 6.4 cm is
18.8 cm. Find the area of the sector.
Answers
Answered by
7
Answer:
Let AOB be the given sector.
Given,
Radius of circle r = 6.4cm
Perimeter of sector AOB = 18.8 cm
So, OA + OB + Arc AB = 18.8 cm
6.4+6.4 + Arc AB = 18.8 cm
Arc AB = 6 cm
l = Arc length AB
= 6 cm
Area of sector AOB = 1/2 ×r × l
= 1 / 2 ×6.4cm × 6cm
= 19.2 cm² Ans.
Similar questions