The ratio of length and breadth of a cuboidal tank is 2 : 1 and its height is 5m. The area of 4 walls is 210m², then its volume is:-
Answer & explanation
Correct answer: option 1
Length : Breadth = 2 : 1
Area of 4 walls = 2 h (l + b)
⇒ 210 = 2 × 5 (2R + 1R)
⇒ R = 7
Dimensions = (2 × 7), (1 × 7), 5
= 14 m, 7 m, 5 m
Volume of cuboid = lbh = 14 × 7 × 5 = 490 m3