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three wings angle = 360
one wing angle = 360/3=120, because wings are equally spaced.
Length of arc= 120/360×22/7×0.98
= 1/3×44/7×0.98
= 44/21×0.98
=43.12/21 = 2.053 m
one wing angle = 360/3=120, because wings are equally spaced.
Length of arc= 120/360×22/7×0.98
= 1/3×44/7×0.98
= 44/21×0.98
=43.12/21 = 2.053 m
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