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butalik [34]
3 years ago
15

A rectangular solid has sides of 6 cm, 8 cm, and 10 cm.

Mathematics
2 answers:
Lubov Fominskaja [6]3 years ago
4 0
To calculate the value of the surface of a rectangular solid, we add up all of the areas of the faces of the solid. For a rectangular solid, we calculate as follows:

SA = 2lw + 2wh + 2lh
SA = 2x6x8 + 2x8x10 + 2x6x10
SA = 96 + 160 + 120 
SA = 376 cm^3

Therefore, the correct answer is the second option. Hope this answers the question. Have a nice day.
asambeis [7]3 years ago
3 0

The Answer is B, 376

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Answer:

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now multiply the matrix with B

X=A^{-1}B\\\\\left[\begin{array}{ccc}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}7/15&1/6&-1/5\\1/3&-1/6&0\\3/5&0&-2/5\end{array}\right]\left[\begin{array}{ccc}4\\2\\-4\end{array}\right] \\\\\\\left[\begin{array}{ccc}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}2.83\\1\\4\end{array}\right] \\

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Answer:

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