Question

A rectangular container is 70 cm long and 20 cm wide. The height of the water level in the container is 3 cm at first. Then Lily pours 7 litres of water into the container. What is the height of the water level in the container now?

Answer 1

Answer:height of the water level now is 8cm

Step-by-step explanation:

V of water in container

=70*20*3

=4200cmcube

=4200/1000litres

volume after 7litres is added

=7+4.2 litres

11.2litres

1120cubic cm

height=h

20*70*h=1120cmcube

h=1120/140

h=8cm

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Answer 2

Answer:

8cm

Step-by-step explanation:

volume intial = .7*.2*.03 = .0042 m^3 = 4.2litre

now 7 litre added so tatal water = 11.2litre = .0112m^3

height now = (.0112/.14)= .08m = 8cm

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