Question

In a building, there are 30cylindrical pillars. The radius of each pillars is 42m and height is 7m. Find the total cost of paintings the curved surface area of all pillars at the rate of rs. 10 per meter square​

Answer 1

Answer:

the answer is 18480/-

Step-by-step explanation:

given

radius =r=42m

height =h=7m

number of cylinders =30

curved surface area of cylinder =2πrh

=2*π*42*7

=44*42

=1848

the total cost of the paintings curved surface of pillars @ 10 rupees=1848*10

=18480/-

therefore the total cost =Rs18480

the cost for 30 cylinders=18480*30

=554400/-