Question

Find the cost of painting 15 cylindrical pillars of a building at rupees 2.50 per square m if the
diameter and height of each pillar are 48cm and 7 m respectively

Answer 1

Answer:

7920 rupees

Csa of cylinder =2*22/7*4.8*7

= 211.2

Csa of 15 pillars = 3168

Cost of painting = 3168*2.50

= 7920