Question

find the lenght of the arc area and perimeter ( r equal to 3.14) centra equal to 120d is equal to 12.6cm​

Answer 1

Answer:

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Step-by-step explanation:

Given:

Central angle of sector,  = 120°

Diameter of the circle = 12.6 cm

⇒ radius of the circle, r = 6.3 cm

Value of π = 3.14

To find: Length of the arc of the sector, Area of the sector and perimeter of the sector.

Formula we use are as follows,

Perimeter of the sector = Length of arc + 2 × radius

So,

Perimeter of the sector = 13.2 + 2 × 6.3 =  25.8 cm

Therefore, Length is 13.2 cm , Area is 41.5 cm² and Perimeter is 25.8 cm