总述:本次共解1题。其中
☆算术计算1题
〖1/1算式〗
作业:求算式 1/12×(0.45)^2×((2×1.8+1.8)*(381.9+349.9-(2×1.35×0.8×26)/(1.8×1.8))+(381.9-349.9)×1.8) 的值.
题型:数学计算
解:
1/12×(0.45)^2×((2×1.8+1.8)*(381.9+349.9-(2×1.35×0.8×26)/(1.8×1.8))+(381.9-349.9)×1.8)
=1/12×0.45^2×((2×1.8+1.8)*(381.9+349.9-(2×1.35×0.8×26)/(1.8×1.8))+(381.9-349.9)×1.8)
=1/12×0.45^2×(5.4*(381.9+349.9-(2×1.35×0.8×26)/(1.8×1.8))+(381.9-349.9)×1.8)
=1/12×0.45^2×(5.4*(381.9+349.9-56.16/(1.8×1.8))+(381.9-349.9)×1.8)
=1/12×0.45^2×(5.4*(381.9+349.9-56.16/3.24)+(381.9-349.9)×1.8)
=1/12×0.45^2×(5.4*714.466667+(381.9-349.9)×1.8)
=1/12×0.45^2×(5.4*714.466667+32×1.8)
=1/12×0.45^2×3915.720002
=1/12×0.2025×3915.720002
=0.083333×0.2025×3915.720002
=0.016875×3915.720002
=66.077775 答案:1/12×(0.45)^2×((2×1.8+1.8)*(381.9+349.9-(2×1.35×0.8×26)/(1.8×1.8))+(381.9-349.9)×1.8)=66.077775你的问题在这里没有得到解决?请到 热门难题 里面看看吧!