) the cost of plastering the mĂąĂ¨r curved sunace al lal U4.8 cm. Find the (i) inner curved surface area (ii) outer curved surface area (ii) total surface areafrom both sides (inside as well as outside) at 2 per m2 if length is 3.5 m.8. A metal pipe is 77 cm long, the inner diameter of the cross-section is 4 cm and the outer diameter 1s9. A hollow cylindrical pipe has inner circumference 44 dm and outer 45 dm. Find the cost of painting it

) the cost of plastering the mĂąĂ¨r curved sunace al lal U4.8 cm.

1.	) the cost of plastering the mĂąĂ¨r curved sunace al lal U4.8 cm. Find the (i) inner curved surface area (ii) outer curved surface area (ii) total surface areafrom both sides (inside as well as outside) at 2 per m2 if length is 3.5 m.8. A metal pipe is 77 cm long, the inner diameter of the cross-section is 4 cm and the outer diameter 1s9. A hollow cylindrical pipe has inner circumference 44 dm and outer 45 dm. Find the cost of painting it
Answer» 9)Inner circumference = 44dm = 4.4mouter circumference = 45dm = 4.5 mlength = 3.5minner CSA = 4.4×3.5 = 15.4 m²outer CSA = 4.5×3.5 = 15.75 m²total = 15.4 + 15.75 = 31.15 m²cost = Rs. 2 per m²total cost = 31.15×2 = Rs.62.30