1.

A cylindrical piller has a diameter of 56 cm and is of 35 m high. There are 16 pillarsaround the building. Find the cost of painting the curved surface area of all the pillars atthe rate of 5.50 per 1 m2?​

Answer»

Answer:

₹ 5421

Step-by-step explanation:

gn 2R = 56 CM

= 56/100 m

H = 35 m

Curved surface area of 1 pillar

= 2πrh

= 22/7 × 56/100 × 35

C.S.A of 16 pillars

= 16 × 22/7× 56/100 × 35

= 4 × 22 × 56/5 m²

Total COST = 5.5 × 4 × 22 × 56/5

= 1.1×88×56

= 5420.8

= 5421 (approximately}

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