Question

25)
The perimeter of a sector of the circle of area
25 πsq. cm is 20 cm. Find the area of sector​

Answer 1

Answer:

area of sector is 25 cm^2

Answer 2

Answer:

since area of circle=25π sq.cm

⇒πr

2

=25π

⇒r=5cm

and perimeter of sector=20 cm

⇒2r+s=20

⇒2.5+s=20

⇒s=10 cm

where s = arc lenth of sector

∵θ= s/r=10/5

=2

area of sector= theta/360° . πr2

= 2/2π .π5^2

=25 cm^2