1 Answer

Sodd · Answer 1 · 2021-05-02T02:10:37+0000

Answer:

$W=21\ in$

Explanation:

we know that

The diagonal of a rectangular poster board is given by the Pythagorean Theorem

D^2=L^2+W^2

where

D is the diagonal

L is the length

W is the width

we have

$L=28\ in\\D=35\ in$

substitute the given values

35^2=28^2+W^2

W^2=35^2-28^2

W^2=441

$W=√(441)=21\ in$

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