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The total length of a rectangular parallelepiped is 108 cm, its aspect ratio is 4:3:2, and its surface area is ______.
4+3+2=9(Parts),
Length:108÷4×4
9=27×4
9=12(Cm),
Width:108÷4×3
9=27×1
3=9(Cm),
Height:108÷4×2
9=27×2
9=6(Cm);
Surface area:(12×9+12×6+9×6)×2,
=(108+72+54)×2,
=234×2,
=468(Cm2);
Answer: This cuboid has a surface area of 468 square centimeters.
The answer is:468 square centimeters.
The sum of all the edges of a cuboid is 180CM, and the length, width and height is 3.4.5. Calculate the surface area and volume of the cuboid
Length of cuboid:180÷4×3÷(3+4+5)=11.25(cm)
Width of cuboid:180÷4×4÷(3+4+5)=15(cm)
Height of cuboid:180÷4×5÷(3+4+5)=18.75(cm)
Therefore, the surface area of cuboid is:(11.25*15+11.25*18.75+15*18.75)*2=1321.88(cm^)
Volume of cuboid:11.25*15*18.75=3164.06(cubic centimeter)
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