窗的宽就是半圆的直径
面积:1.6×1.2+3.14×(1.2÷2)×(1.2÷2)÷2
=1.92+1.1304÷2
=1.92+0.5652
=2.4852
周长:[(1.6+1.2)×2-1.2]+2×3.14×(1.2÷2)÷2
=4.4+1.884
=6.284
窗的宽就是半圆的直径
面积:1.6×1.2+3.14×(1.2÷2)×(1.2÷2)÷2
=1.92+1.1304÷2
=1.92+0.5652
=2.4852
周长:[(1.6+1.2)×2-1.2]+2×3.14×(1.2÷2)÷2
=4.4+1.884
=6.284