1.

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

Answer»

ong>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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