Dimensions 4552

The aquarium with bottom dimensions of 75 cm and 45 cm has a volume of 135 l. What is the area of areas that are wetted with water if the surface reaches halfway around the aquarium?

Correct answer:

S =  81.75 dm2

Step-by-step explanation:

a=75/10=215=7.5 b=45/10=29=4.5 V=135/2=2135=67.5 S1=a b=7.5 4.5=4135=33.75 c=V/S1=67.5/33.75=2 S=S1+2 c (a+b)=33.75+2 2 (7.5+4.5)=81.75 dm2



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