A cistern 6 m long and 4 m wide contai...

A cistern 6 m long and 4 m wide contains water up to a depth of 1 m 25 cm. The total area of the wet surface is

A

`55m^2`

B

`53.5 m^2`

C

`50 m^2`

D

`49 m^2`

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The correct Answer is:

D

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