Question

In a building there are 24 cylindrical pillars. The radius of each pillar is 28 cm and height is 4 m. Find
the total cost of painting the curved surface area of all pillars at the rate of 8 per m².​

Answer 1

$\mathfrak{Answer}$

13.5168 rupees

Step-by-step explanation:

C.S.A of the pillar = 2πrh

2×22/7×28×4

704cm²

C.S.A of 24 pillars =704×24

16,896cm²

1cm²=1/10,000m²

16,896cm²=16,896/10,000

1.6896m²

cost of 1m²=8 rupees

cost of 1.6896 =1.6896×8

13.5168 rupees