Length of the tank = 2.1 m =21 dcm.
Breadth of the tank = 1.5 m =15 dcm
Let the height of increased water = x dcm.
According to the problem,
21 × 15 × x = 630.
∴ x=\frac{630}{21 × 15}=2
∴ Height of the water level increased by 2 dcm.
Length of the tank = 2.1 m =21 dcm.
Breadth of the tank = 1.5 m =15 dcm
Let the height of increased water = x dcm.
According to the problem,
21 × 15 × x = 630.
∴ x=\frac{630}{21 × 15}=2
∴ Height of the water level increased by 2 dcm.