Q. 1 E5.0( 1 Vote )

# Find the arc leng

Given:

central angle 240°

Arc length = ?

area of sector = ?

perimeter of sector = ?

As we know,

(a) Length of arc =   Length of arc = 88dm

(b) Area of sector =   area of sector = 924 dm2

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

= 2 ( r) + length of arc

= 2(21) + 88

= 42 + 88 = 130dm

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