英语翻译the length of rectangle is three more than twice its width.find the length and width of the rectangle.if its perimeter is 84cm.
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英语翻译the length of rectangle is three more than twice its width.find the length and width of the rectangle.if its perimeter is 84cm.
英语翻译
the length of rectangle is three more than twice its width.
find the length and width of the rectangle.
if its perimeter is 84cm.
英语翻译the length of rectangle is three more than twice its width.find the length and width of the rectangle.if its perimeter is 84cm.
翻译:若长方形的周长是84厘米,它的长比宽的2倍还多3厘米,问长方形的长和宽分别是多少?
设长方形的宽是X厘米,长是(2X+3)厘米. (Suppose the width of the rectangle is X cm, the length of the rectangle is (2X+3)cm.)
2[X+(2X+3)]=84
3X+3=42
3X=39
X=13 2X+3=29
所以长方形的宽是13厘米,长是29厘米. (Therefore the width of the rectangle is 13 cm, the length of the rectangle is (2X+3)cm.)