How long is a sheet of paper

Asked by maham237 @ 09/01/2021 in Mathematics viewed by 245 People

A sheet of paper is 8 1/2 inches wide and 11 inches long. the sheet is printed with a margin 1 1/4 inches wide on all four sides. find the perimeter of the printed part of the page

Answered by maham237 @ 09/01/2021

The perimeter of the printed part of the page is 29 inches.

Explanation

Length of the sheet of paper is 11 inches and width is $8\frac{1}{2}$ or $\frac{17}{2}$ inches.

Width of the margin is $1\frac{1}{4}$ or $\frac{5}{4}$ inches.

As the margin is on all sides of the paper, that means both across the length and width of the paper we need to leave $\frac{5}{4}$ inches for that margin.

So, the length of the printed part $=11-(2*\frac{5}{4})= 11- \frac{5}{2} =\frac{17}{2}$ inches

and the width of the printed part $= \frac{17}{2}-(2*\frac{5}{4})= \frac{17}{2}-\frac{5}{2}= \frac{12}{2}=6$ inches.

Thus the perimeter of the printed part of the page will be: $2(\frac{17}{2} +6)= 2(\frac{29}{2})= 29$ inches.

Take any three non-collinear points a b c and draw triangle a,b,c. through each vertex of the triangle draw a line parallel to the opposite side using ruler and compass

Asked by wiki @ 15/11/2022 in Mathematics viewed by 1476 persons

How long is a sheet of paper

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