一道英文数学题a retangle is four times as long as it is wide.if the

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一道英文数学题
a retangle is four times as long as it is wide.if the area of the rectangle is 1600cm,waht are its dimensions?

A rectangle is four times as long as it is wide.if the area of the rectangle is 1600cm,waht are its dimensions
一个长方形的长是宽的4倍,长方形的面积是1600cm²,长、宽各为多少?
Solution：
Let x be the width of the rectangle
So,x × 4x = 1600,4x² = 1600,x² = 400,x = square root of 400 = 20 cm.
The length = 20×4 = 80 cm
So,the dimensions are 80cm × 20cm.
平方 = square of .,to the power of 2
开平方 = square root of .,root .
开立方 = cubic root of .

as as 的用法It is ---- it is long.A.half not as wide as B.wide 一道英语说明的数学题If a number eight times as lagre as x,is increased The street is as () (long) as that one,but it is () (wide) t The earth is about ___the Mars.A.half as big as B.four times the population of China is four times as___ as USA A is four times bigger than B 和A is four times as big as B 有 when david is twice as old as he is now he will four times a as语法分析the bridge is three times as long as that one.three ti The milk smells ___ sour.A.as if it is B.as if it was The bule whale is four times as big as the biggest elephant. The blue box is about four times as big as the gre 翻译This is four times as big as that one.