Question

find out the cost of painting 12 cylinderical pillars of each diameter 56cm and height 440cm at rs.50 per sq cm​

Answer 1

Here you go

Rs. 46,452,000 is needed to paint 12 pillars.

Answer 2

Answer: The total cost of painting is ₹4,64,64,000

Step-by-step explanation:

We know that CSA of a cylinder= 2πrh

Now Diameter= 56cm

:. Radius = 56/2 cm = 28 cm

Height = 440 cm

  CSA of each cylinder= (2×22/7×28×440)cm²

                                     =(44×4×440)cm²

:. CSA of each cylinder =77,440 cm²

CSA of all pillars = (12 × 77,440) cm²

:.CSA of all pillars = 9,29,280 cm²

Cost of painting = ₹ 50/cm²

  Total cost of painting = ₹(9,29,280 × 50)

:. Total cost of painting = ₹4,64,64,000

I hope this helps you! Kindly reply back if there's any problem with this answer. Have a great day! :D

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