In a thin rectangular tin sheet 8x12 sheet, you have to cut a rectangular opening. The area of the opening has to be 45 feet, and its edges have to have an equal distance from the edges of the sheet. Determine this distance.

Answer 1

if the distance from the edges is x,

(8-2x)(12-2x) = 45
x = 3/2

So, the hole is 5x9 with area 45