Given an cuboid whose dimensions are 5,8,2
Indicate whether it is true or false:
To calculate the surface of the cuboid it is not necessary to know which are the sides of the base and which is the height.
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Given an cuboid whose dimensions are 5,8,2
Indicate whether it is true or false:
To calculate the surface of the cuboid it is not necessary to know which are the sides of the base and which is the height.
To solve this problem, we begin by calculating the surface area of the cuboid using its dimensions. The surface area formula for a cuboid is:
Substituting the dimensions 5, 8, and 2 into the formula, we calculate:
Regardless of the assignment of dimensions as length, width, or height (due to the commutative nature of multiplication), the computed surface area remains the same at 132 square units.
Thus, it is indeed true that determining which dimensions are the base or height is unnecessary for calculating a cuboid's surface area. The computation yields consistent results irrespective of the assignment.
Therefore, the statement is true.
True
Calculate the surface area of the orthohedron below using the data in the diagram.
The surface area formula uses multiplication, and multiplication is commutative. Whether you call the dimensions 5×8×2 or 2×5×8, the products remain the same!
Then you would need to identify the base! But for total surface area, all six faces are included automatically in the formula, so dimension labels don't matter.
Try it! Assign dimensions differently:
Same result every time!
No! This only works for rectangular prisms (cuboids) where opposite faces are identical. For shapes like cylinders or pyramids, orientation can matter for certain calculations.
Surface area measures the outside covering (like wrapping paper needed), while volume measures space inside. For volume, you multiply all three dimensions: .
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