Question

Area of a sector is 1540 cm2. It subtends an angle of 50 at the centre of the circle. Find it’s length of arc of sector .​

Answer 1

Answer:

ANSWER

Area of the sector=

360

θ

×πr

2

⇒1540=

360

50

×

7

22

×r

2

⇒r

2

=

50×22

1540×360×7

=3528

∴r=59.4cm

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Answer 2

Area of the sector = 360θ×πr2

⇒1540 = 36050×722×r2

⇒r2 = 50×221540×360×7=3528

∴ r = 59.4cm