If the sum of radius and height of a solid cylinder is 20 cm and its total surface area is 880 cm2 then its volume is

Answer: Option C

r + h = 20 . . . . . . (i)
Total surface area = 880
2πr(h + r) = 880
2 × $$\frac{22}{7}$$ × r × 20 = 880
r = 7, h = 13
Volume = πr²h
= $$\frac{22}{7}$$ × 7 × 7 × 13
= 154 × 13
= 2002 cm³