矩形的对角线为61厘米,宽度为11厘米。你怎么找到长度?

矩形的对角线为61厘米,宽度为11厘米。你怎么找到长度?
Anonim

回答:

#L# = #sqrt(3842# 或#61.98386887

说明:

#d# = #sqrt(L ^ 2 = W ^ 2#

#L# = #sqrt(d ^ 2 - W ^ 2#

#L# = #sqrt(61 ^ 2 - 11 ^ 2#

#L# = #sqrt(3721 - 121#

#L# = #sqrt(3842#