Math, asked by anakeerad9har, 1 year ago

A sector is cut from a circle of radius 42 cm. The angle of the sector is 1200. Find the length of its are and area.

Answers

Answered by rakstar
5
length of arc= 120/360*22/7*2*42
                    = 1/3*44*42/7
                     =1/3*44*6
                    = 44*2
                     =88 cm
area of sector= length of arc*radius/2
                      =88*42/2
                       = 88*21    
                       =1848 cm2



Answered by Mathexpert
5
Angle of the sector = 120°
Radius of the sector = 42 cm
Length of the arc of the sector =  \frac{120}{360}* 2 *  \frac{22}{7}*42
                                                  \frac{1}{3}* 2 * 22*6
                                                 = 88 cm
Area of the sector =  \frac{120}{360}*  \frac{22}{7}*(42)^2
                                                  \frac{1}{3}*  22*6*42
                                                 = 1848 sq cm

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