Answer :
Given, A cylindrical pillar, diameter = 56cm = 0.56m i.e. r = 0.28cm
Height h = 35m
Number of pillars n = 16
Curved surface area of a pillar = 2πrh
= 2 × 3.14 × 0.28 × 35
= 61.54cmCurved surface area of 16 pillars = 16 × 61.54
= 984.64cm2
Cost of painting = 5.5 × 984.64
= 5415.52
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