Question

A cylindrical pillar has a diameter of 56cm and is of 35m high. There are 16pillars around the building. Find the cost of painting the curved surface area of all pillars at the rate is rupees 5.50per 1msquare

Answer 1

Answer:

Total cost = 5.50 × 985.6

                = ₹ 5420.80

Step-by-step explanation:

Diameter = 56 cm

Radius = 56 / 2

           = 28 cm

           = 0.28 m

Height = 35 m

Curved Surface Area = 2πrh

                                   = 2 × 22/7× 88/100 ×35

                                   = 305/5

                                   = 61.6 m²

Total CSA = 61.6 ×16

                 = 985.6 m²

Cost for a m² = ₹ 5.50

Total cost = 5.50 × 985.6

                = ₹ 5420.80

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Hope it helps U