Question

A cylindrical pillar has a diameter of 56cm and is of 35cm high there are 16 pillars around the building. find the cost of painting the c. S. a. at ₹5.50​

Answer 1

Answer:

Step-by-step explanation:

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

I hope it helps :D pls mark the branliest!!!!

Answer 2

Answer:

₹542.08

Step-by-step explanation:

d=56cm. h=35cm=0.35m

r=28cm=0.28m

CSA of cylinder=2×22×0.28×0.35/7

=6.16m^2

16pillars=6.16×16=98.56m^2

1m^2=₹5.50

98.56m^2=98.56×5.50

=₹542.08