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When a cuboid of 100 decimetres is cut off from a cuboid, the remaining part is exactly a 5 minute square with the original cuboid What is the square decimeter of the surface area of (continued ↑)
Not cold comfort 94,
Square bottom area:5×5=25(square decimeter)
Small cuboid height:100÷25=4(decimeter)
Original cuboid height:5+4=9(decimeter)
Original surface area:2×(5×5+5×9+5×9)=230(square decimeter)
A cuboid is made up of three cubes with a length of 2 decimeters. The cuboid has a volume of ______ in volume and ______ square decimeters in surface area.
6×2×2=24 Decimeter;
(6×2+6×2+2×2)×2=56Mm2;
The answer is:24,56.
6×2×2=24 Cm3;
(6×2+6×2+2×2)×2=56Mm2;
The answer is:24,56.
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