Aquarium

There is 15 liters of water in a block-shaped aquarium with internal dimensions of the bottom of 25 cm and 30 cm. Find the volume of water-wetted surfaces. Express the result in dm square.

Correct answer:

S =  29.5 dm2

Step-by-step explanation:

a=25 cm dm=25:10  dm=2.5 dm b=30 cm dm=30:10  dm=3 dm  V=15 l S1=a b=2.5 3=215=7.5 dm2 c=V/S1=15/7.5=2 dm S=S1+2 c (a+b)=7.5+2 2 (2.5+3)=29.5 dm2



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