4. Find the cost of painting curved surface area of 12 pillars each of diameter 48 cm and
height 7 m at the rate of 2.50 per m2.
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3
Answer:
that chapter had not come yet in this term
Answered by
3
Answer:
Rs 316.8
Step-by-step explanation:
Given, Diameter of pillar = 48 cm = 0.48 m
Radius of pillar = 48÷2 = 24 cm = 0.24 m
Height of pillar = 7m
No. of pillar = 12
Cost of painting C.S.A of 12 pillars :
= CSA of pillar × Cost of panting per m^2 × No. of pillars
= 2πrh × Rs 2.50 × 12
= {2 × (22/7) × 0.24 × 7} × 2.5 × 12
= 2× 22×0.24 × 2.5 × 12
= 44× 0.24 × 30
= 44×2.4×3
= 316.8 Rs
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