Question

In a cylindrical dome, there are 16 pillars. The radius of each pillar is 35 cm and height is 7 m. Find the total cost of painting the curved surface area of all pillars at the rate of ₹ 8 per sq m.

Answer 1

Answer:

The total cost of painting the curved surface area of all pillars at the rate of ₹ 8 per sq m. is 19.712.

Step-by-step explanation:

C.S.A. of cylindrical =2πrh

⇒ C.S.A. of are pillar=2×22/7×35×7

                                 =1540 cm^{2}

⇒ C.S.A. of 16 pillars =16×1540=24640 c$m^{2}$

=24640× $10^{-4}$ $m^{2}$

=2.464 $m^{2}$

⇒ Total cost Rs. 8×2.464=Rs.19.712.