Answer :
Cost of painting the 16 pillars of the building=curved surface area of 16 pillars*rate of painting per meter^2
pi*d*h*16*5.50
22/7*0.56*35*16*5.50=$5420.80
pi*d*h*16*5.50
22/7*0.56*35*16*5.50=$5420.80
[tex]<b><i>[/tex]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