依题可知,正方形边长=半圆直径=1m
S正方形=边长²=1²=1m²
S半圆形=π×半径²×½=0.125πm²≈0.393m²
∴S窗户=S正方形+S半圆
=1m²+0.393m²=1.393m²
答:面积为1.393m²