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antoniya [11.8K]
2 years ago
8

7 cm

Mathematics
1 answer:
asambeis [7]2 years ago
6 0

use this equation to solve for the surface area.

A=2(w+l+hl +hw)

w stands for width

l stands for length

h stands for height

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<img src="https://tex.z-dn.net/?f=%285y%20%2B%209%29%286y%20-%201%29" id="TexFormula1" title="(5y + 9)(6y - 1)" alt="(5y + 9)(6y
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Outer Terms
Inner Terms
Last Terms

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( 5y )( 6y ) + ( 5y )( - 1 ) + 9 ( 6y ) + 9 ( - 1 )
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Combine, if any, the like-terms
30y² + 49y - 9
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