一间教室长9.2米,宽6.5米,这间教室的面积是多少平方米? 一间教室长9米,宽6米教室的面积是多少平方米?如果用面积是九...
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9.2×6.5=59.8
9.2乘6.5
绛旓細9.2/0.7 绾︾瓑浜14 6.3/0.7 9 14*9 126鍧 涓嶅
绛旓細闀9.2绫闄0.6绫=15.5鍧 瀹6.9绫抽櫎0.6绫=11.5鍧 15.5鍧椾箻11.5鍧=178.25鍧 鎵浠180鍧楃摲瓒冲浜
绛旓細鏁欏闈㈢Н涓:7.4鈪6.5=48.1(骞虫柟绫)銆傜敤鏁欏闈㈢Н闄や互涓鍧楀湴鐮栭潰绉紝灏辨槸鎵闇鍧楁暟涓:48.1梅0.64=75.15625锛屾寜瀹為檯闇瑕佸簲鐢ㄥ埌76鍧椼76<100锛屾墍浠100鍧楀鐢ㄣ
绛旓細8.6脳6.5+锛8.6脳4+6.5脳4锛壝2-24=55.9+锛34.4+26锛壝2-24=55.9+120.8-24=176.4-24=152.7锛堝钩鏂圭背锛夌瓟锛氳绮夊埛鐨勯潰绉槸152.7骞虫柟绫筹紟
绛旓細8.8脳6.5=57.2(绫²)0.5脳0.5=0.25(绫²)57.2梅0.25=228.8(蹇)
绛旓細瑙o細鏁欏鐨勯暱鏄9绫筹紝瀹鏄6.5绫锛屽彲浠ヨ绠楀嚭鏁欏鐨勯潰绉9脳6.5=58.5骞虫柟绫 58.5骞虫柟绫=5850骞虫柟鍒嗙背 杈归暱鏄5鍒嗙背鐨勬柟鐮栭潰绉负 5脳5=25骞虫柟鍒嗙背 閾烘弧鏁欏闇瑕佺殑鏂圭爾鏁伴噺涓 5850梅25=234鍧 绛旓細涓鍏遍渶瑕234鍧楁柟鐮栥
绛旓細鍥炵瓟锛(8脳3.4脳2+6.5脳3.4脳2+8脳6.5-21.6)脳3.2=129脳3.2=412.8鍏
绛旓細(8脳3.4脳2+6.5脳3.4脳2+8脳6.5-21.6)脳3.2=129脳3.2=412.8鍏
绛旓細8绫=80鍒嗙背锛6.5绫=65鍒嗙背 80鍜65鐨勬渶澶у叕绾︽暟涓5 鎵浠ョ敤50cm脳50cm鐨勬柟鐮栭摵璁惧悎閫
绛旓細杩欎釜寰堢畝鍗曞憖锛屽氨鏄暱涔樹互瀹戒箻浠ラ珮锛岄偅灏辨槸鍗佺背涔樹互6.5绫涔樹互涓夌背銆備篃灏辩瓑浜65脳3锛屾渶鍚庣粨鏋滃憿锛屽氨鏄瓑浜庛195绔嬫柟绫炽