Calculate 81935

The volume of the cuboid is 960 cm3. The lengths of the edges are in the ratio 1 : 3: 5. Calculate the surface area of the cuboid.

Correct answer:

S =  736 cm2

Step-by-step explanation:

a = 1x b = 3x c = 5x  V=960 cm3 V = abc = 1 3 5 x3  x=3V/(1 3 5)=3960/(1 3 5)=4 cm  a=1 x=1 4=4 cm b=3 x=3 4=12 cm c=5 x=5 4=20 cm  S=2 (a b+b c+c a)=2 (4 12+12 20+20 4)=736 cm2

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