Write an equation for the perimeter, and solve it. Remember that the perimeter is the sum of all four sides.
5.3 cm
4 m
270+108=378cm which = 148.819 inches (to 3 decimal places) Algebraic Steps / Dimensional Analysis 378 cm*1 in 2.54 cm=148.8188976 in
A very very minimum of 49896 cm2 or 498.96 metres squared. Keep in mind that this is just the material when perfectly cut with no overlap. You need to judge how much material to leave yourself, and leaving a bit to double over if sewing