Asked by amanda

the printed matter on a 10 by 16 centimeter page of a book must cover 0 square centinmeters. if all margins are to be the sme width, how wide should they be?

Answers

Answered by Bosnian
A = Area of the printed matter

w = width


a = 10 - 2 w

b = 18 - 2 w


( 10 - 2 w ) * ( 18 - 2 w ) = A

18 * 10 - 18 * 2 w - 2 w * 10 - 2 w * ( - 2 w ) = A

180 - 36 w - 20 w + 4 w ^ 2 = A

4 w ^ 2 - 56 w + 180 - A = 0



Are you sre that the printed matter of a book must cover 0 cm ^ 2 ?
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