亮亮家要给长0.75米,宽0.5米,6米的衣柜换布罩,没有底面.至少需要用布多少米?
问题描述:
亮亮家要给长0.75米,宽0.5米,6米的衣柜换布罩,没有底面.至少需要用布多少米?
答
4.375m²
0.75×0.5+0.75×1.6×2+0.5×1.6×2
=0.375+2.4+1.6
=4.375m²