Netflix S Satchel One I Learni...
Work out the perimeter of this
sector. Give your answer to 2
decimal places.
126°
9cm

The perimeter is 37.8 cm

Step-by-step explanation:

The perimeter of a sector is the sum of the length of the arc and 2 radii

The formula for the length of the arc is;

theta/360 * 2 * pi * r

126/360 * 2 * 3.142 * 9 = 19.80 cm

We now add the 2 radii

That gives;

19.80 + 2(9)

19.80 + 18

= 37.8 cm

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step-by-step explanation:

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step-by-step explain:

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