Question

In a building there are 24 cylindrical pillars with each having a radius 28 cm and height
4 m. Find the cost of painting the curved surface area of all pillars at the rate of Rs. 8 per meter square

Answer 1

Answer:

704 m²

Step-by-step explanation:

no. of pillars = 24

radius = 28 m

height = 4 m

CSA of cylinder = 2Πrh

sol. :

2×22/7×28×4 = 704 m²

CSA = 704 m²