Prism X

The prism with the edges of the lengths x cm, 2x cm and 3x cm has volume 20250 cm3. What is the area of surface of the prism?

Correct result:

S =  4950 cm2


V=20250 cm3  V=abc=x 2x 3x=6x3 x=V63=2025063=15 cm a=x=15=15 cm b=2 x=2 15=30 cm c=3 x=3 15=45 cm S=2 (a b+b c+a c)=2 (15 30+30 45+15 45)=4950 cm2

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Showing 2 comments:
Savage Math Hacker 21
i think that all math is great but cubes graphic is better.????????

Dr Math
graphics fixed


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