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Step-by-step explanation:
Length of arc =16.5cm
θ=54°
Radius =?
Cicumference =?
Length of arc =
360°
2πrθ
⇒
360°
2×
7
22
×r×54°
=16.5
⇒r=
3×22×2
16.5×20×7
⇒r=17.5cm
Therefore,
Circumference =2πr
=2×
7
22
×17.5
=110cm
Also,
Area of circle =πr
2
=
7
22
×(17.5)
2
=22×2.5×17.5=962.5cm
2
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Answer:
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