Twenty cylindrical pillars of a house are to be painted on Diwali. The diameter and the height of each pillar are 50 cm and 6 m respectively. What is the cost of painting all the pillars at the rate of Rs 4 per square meter?
(Use π = 3.14)
Answers
Answered by
204
Answer:
Cost of painting all pillars = Rs 753.60
Step-by-step explanation:
Diameter of each pillar = 50 cm
Radius = 25 cm = 0.25 m
Height = 6 m
Curved surface area of Twenty cylindrical pillars = 20 × 2πrh sq. units
= 20 × 2 × 3.14 × 0.25 × 6 m²
= 188.4 m²
Cost of painting 1 m² of pillars = Rs 4
Cost of painting 188.4 m² of pillars = Rs (188.4 × 4) = Rs 753.60
Similar questions