✨ Best Answer ✨
答案有誤,應為102
周長=3+3+(2x+2)+5+8+(6x-8)+(2x+5)
+4+5+4+3+6x=66
34+16x=66,x=2
所求面積=矩行-黃色區域=17*12-18-64-20=102
✨ Best Answer ✨
答案有誤,應為102
周長=3+3+(2x+2)+5+8+(6x-8)+(2x+5)
+4+5+4+3+6x=66
34+16x=66,x=2
所求面積=矩行-黃色區域=17*12-18-64-20=102
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