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question iis in image ….....................................................?

question iis in image
 ….....................................................?

Question Image
Grade:7

1 Answers

Saurav
224 Points
5 years ago
b at end =1/2 b at interior=1/2 b
idl(b/2)=2tsin(theta)
dl=r(2dtheta)
t=bir/2
thats it 
was a preety simple question
i wish i could addd an image
please approve
 

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