Question

In a building there are 30 cylindrical pillars. The radius of each pillar is 28 cm and height is
5 m. Find the total cost of painting the curved surface area of all pillars at the rate of Rs. 8
per m​

Answer 1

Answer:

ignore my hand writing

Mark as brainlist thanks

AND don't forget to like

Answer 2

2,11,200 Rs

Step-by-step explanation:

• Given :

1. There are 30 cylindrical pillars in a building.

2. Radius of each pillar is 28 cm

= 0. 28 m

3. Height of each pillar is 5 m

• To Find : Total cost of painting C S A of all the pillars at the rate of 8 Rs per m².
• Solution: C S A of a pillar :

=2 * 22/7 * 0.28* 5

= 88.0 m²

C S A of 30 pillars :

88.0 * 30 m²

also,

1 m²= 8 Rs

88.0 * 30 m² = 88.0 * 30 * 8

= 2,11,20 Rs