Question

per m
(ii) the cost of plastering the inner curved surface at the rate of <
A metal pipe is 77 cm long, the inner diameter of the cross-section is 4 cm and the outer diameter is
4.8 cm. Find the (i) inner curved surface area (ii) outer curved surface area (iii) total surface area.
A hollow cylindrical pipe has inner circumference 44 dm and outer 45 dm. Find the cost of painting it
from both sides (inside as well as outside) at 2 per m² if length is 3.5 m.​

Answer 1

Answer:

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