Question

The area of sector of radius 28cm is 308cm².Find the angle of its arc.​

Answer 1

Answer:

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Explanation:

Sector (OAPBO) of a circle is given whose

radius(r)=28cm

and central angle (θ)=45

∘

∴ Area of sector (A)=

360

∘

πr

2

θ

=

7

22

×

360

∘

28×28×45

∘

⇒ Area of sector =308cm

2

is the required area.

Answer 2

given r=28 and area of sector =308

28*28*22/7*∅/360 =308

we get ∅=45°