Question

a cylindrical pillar has diameter of 56 cm and its 35 m by there are 16 pillars around the building find the cost of painting the road surface area of Hitler's @ 5 and 5041 m square

Answer 1

=2×22/7×56/2×35
=22×280
=6160
=6160×16
=98560
=98560×5
=47800.

Answer 2

$<b><i>$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