Answer :
Given:
radius (r) = 14 cm
central angle 45°
Arc length = ?, area of sector = ? and perimeter of sector = ?
As we know,
(a) Length of arc =
⇒ Length of arc = 11cm
(b) Area of sector =
⇒ area of sector = 77cm2
(c) perimeter of sector = r + r + length of arc
= 2 ( r) + length of arc
= 2(14) + 11
= 28 + 11 = 39cm
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