A 512 page book has pages 7 inches wide by 9 inches high. The printed area measures 5.375 iches by 7.75 inches. The left margin is 0.3125 inches and the top margin is 0.5625 inches

How wide are the margins at the bottom of each page? In a full decimal

To find the width of the margins at the bottom of each page, we first need to calculate the printable area on the page.

Given:
Page width = 7 inches
Page height = 9 inches
Printed area width = 5.375 inches
Printed area height = 7.75 inches
Left margin = 0.3125 inches
Top margin = 0.5625 inches

To find the printable width of the page, we subtract the left margin and the printed area width from the page width:
Printable width = Page width - Left margin - Printed area width
Printable width = 7 inches - 0.3125 inches - 5.375 inches
Printable width = 1.3125 inches

To find the printable height of the page, we subtract the top margin and the printed area height from the page height:
Printable height = Page height - Top margin - Printed area height
Printable height = 9 inches - 0.5625 inches - 7.75 inches
Printable height = 0.6875 inches

Since the printable area represents the area where the text or content can be placed, the width of the margins at the bottom of each page would be the remaining space at the bottom. Therefore, the width of the bottom margins can be calculated as follows:
Bottom margin width = Printable width - printed area width
Bottom margin width = 1.3125 inches - 5.375 inches
Bottom margin width = -4.0625 inches

However, a negative margin width doesn't make sense in this context. It seems there might be a mistake in the given information or calculations. Please re-check the values provided to ensure accuracy.

9-0.5625-7.75 = ?

if top is .5625 and printed height = 7.75

then
bottom + .5625 + 7.75 = 9
bottom = 9 - 7.75 - .5625

Thanks @Damon