Question

a wire of length 18cm is bend in the format a sector of lenght of arc 10cm. find the angel in radian and degree.subtended by the arc at the centre of the circle.also find the area of the sector​

Answer 1

Answer:

Perimeter of the sector =Arc length

-+2 r = 18

10 +2 r=18

2 r = 8, r = 8/2=4 cm

arc length=l=x/360. x2πr=10

= X/36ox2x3.14x. 4

x = 360x10/2x3.14x4=143,3 degree

I80 degree. π

143.3=80/100 = 4/5

4/5π radian. .Ans

Area of the sector =

x/360. πr 2

143.3/360x3.14x4^2 = 20cm2. Ans

Answer 2

Answer:

Step-by-step explanation:

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