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Temka [501]
3 years ago
7

Can anyone please help me with this attachment?

Mathematics
1 answer:
Vesna [10]3 years ago
6 0

Answer:

Perimeter of the sector = (36 + 8π) cm.

Step-by-step explanation:

Formula to find the of an arc of the circle is,

Length of the arc = \frac{\theta}{360}(2\pi r)

Here, θ = central angle formed by the arc

r = radius of the circle

Therefore, length of the arc given in the picture = \frac{80}{360}(2\pi) (18)

                                                                                = 8π cm

Perimeter of the sector = Sum of all sides of the sector

                                       = Length of radius + length of the arc + length of radius

                                       = 18 + 8π + 18

                                       = (36 + 8π) cm

Perimeter of the sector is (36 + 8π) cm.

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