Q. 145.0( 1 Vote )

Find the radius,

Answer :

Given:

length of arc (a) = 4.4m

area = 9.24m²

(a) Area of sector =

⇒ radius of sector = 4.2m

(b) Area of sector =

⇒ central angle = 60°

(c) perimeter of sector = 2 ( r) + length of arc

= 2(4.2) + 4.4

= 8.4 + 4.4

= 12.8cm

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