yo formula use garne ho hai ......... 2πR x (Deflection angle/360) ......... Radius 60 m raakhnus ani deflection angle 60 degree raakhnus ... Yeso garda 62.83m auxa jun 63 m ko najik ko value ho.....tesaile answer option (b) vaako hai....Yesto question deko bela sabbai case maa yei formula use garne hai.