The cylindrical vessel contains 49.896 litres of liquid. The cost of painting its curved surface area at 2 paise/sq cm 95.04. Find its total surface area.

5724 cm2 7524 cm2 5742 cm2 7254 cm2

7524 cm2

V = 49.896 × 10000 cm3 $∴πr^2h=49896cm^3$ C.S.A = $\frac{9504}{2}cm^2$ ∴ 2πrh = 4752 $⇒\frac{πr^2h}{2πrh}=\frac{49896}{4752}$ ⇒ 21 and h = 36 T.S.A. = 2πr(h + r) = 7524 cm2