长15.6,宽8.4 屋脊是2.6米,坡度15%,面积怎么算?
问题描述:
长15.6,宽8.4 屋脊是2.6米,坡度15%,面积怎么算?
答
﹙15.6﹢2.6 ﹚×4.2/2×2=76.44 8.4×﹙7.8﹣1.3﹚/2×2=54.6 76.44﹢54.6=131.04m?
长15.6,宽8.4 屋脊是2.6米,坡度15%,面积怎么算?
﹙15.6﹢2.6 ﹚×4.2/2×2=76.44 8.4×﹙7.8﹣1.3﹚/2×2=54.6 76.44﹢54.6=131.04m?